Fix some typos in ChangeLog

ChangeLog

@@ -10401,7 +10401,7 @@
 	* arch/arm/src/efm32/efm32_rtc_burtc.c: Updated EFM32 RTC driver from
 	  Pierre-noel Bouteville (2015-05-19).
 	* arch/arm/src/tiva/chip/tm4c_memorymap.h, tm4c_pinmap.h, and vectors.h.
-	  configs/tm4c1294-launchpad/include/board.h and src/tm4c_autoleds.c: 
+	  configs/tm4c1294-launchpad/include/board.h and src/tm4c_autoleds.c:
 	  Fixes for Tiva TM4C1294NCPDT.  From Frank Sautter.  (2015-05-20).
 	* configs/tm4c1294-launchpad/include/board.h:  Added TM4C1294NCPDT
 	  EN0_LED2 (10/100-Base-Tx); removed all booster pack pin definitions.
@@ -11625,13 +11625,13 @@
 	* configs/nucleus2g:  Removed the Nucleus2G configuration.  There has
 	  not been any activity with the commercial board in a few years and it
 	  no longer appears to be available from the 2g-eng.com website.
-	  Since the board is commercial and no longer publically available, it
+	  Since the board is commercial and no longer publicly available, it
 	  no longer qualifies for inclusion in the open source repositories.
 	  The code as of this data is still available in the Obsoleted
 	  repository at configs/nucleus2g (2016-04-12).
 	* arch/arm/src/stm32l4: Fix the STM32L4 SPI driver.  That SPI driver is
 	  quite different. They now handle frames of arbitrary size between 4
-	  and 16 bits. It was broken before a new bit has to be set (rx fifo
+	  and 16 bits. It was broken before a new bit has to be set (RX fifo
 	  threshold) to handle <= 8-bit transactions. If not set, the default is
 	  16-bit packed >=8-bit frames and the RXNE bit is never set (it is set
 	  when 16-bits are received). weird things as always.
@@ -11662,7 +11662,7 @@
 	* configs/stm32l476vb-disco:  Add support for QSPI based N25Qxxx flash.
 	  From Dave dev@ziggurat29.com (2016-04-18).
 	* graphics/vnc:  Add support for a VNC server.  This logic is code
-	  complete, but untested and so not ready for primetime (2016-04-18).
+	  complete, but untested and so not ready for prime time (2016-04-18).
 	* configs/samv71-xult/vnc:  Add a configuration that will be used to
 	  verify VNC (also untested) (2016-04-18).
 	* drivers/ioexpander: Fix an error in the PCA9555 driver: Under certain
@@ -11679,16 +11679,16 @@
 	* configs/stm32l476vg-disco: Update stm32l4 disco board to reflect QSPI
 	  DMA support. From Dave dev@ziggurat29.com (2016-04-24).
 	* arch/arm/src/stm32l4: Add configuration options to allow SRAM2 to be
-	  used for heap, or not at all, and to zero-init it on OS start, or not
+	  used for heap, or not at all, and to zero-initialize it on OS start,
-	  at all. From Dave dev@ziggurat29.com (2016-04-24).
+	  or not at all. From Dave dev@ziggurat29.com (2016-04-24).
-	* drviers/mtd/smart.c:  Return code of smart_scan not checked, can
+	* drivers/mtd/smart.c:  Return code of smart_scan not checked, can
 	  cause success result in failure case, leading to 'dev' pointer being
 	  invalid. From Dave dev@ziggurat29.com (2016-04-27).
 	* arch/arm/src/stm32l4: Add support for QSPI memory mapped mode. From
 	  Dave dev@ziggurat29.com (2016-04-27).
 	* configs/stm32l476vg-disco: Add board ioctls for allowing user
 	  application to cause QSPI memory mapped mode to be engaged and
-	  disengaged.  Also partitioned QSPI flash for file system and other 
+	  disengaged.  Also partitioned QSPI flash for file system and other
 	 (eventually xip).  From Dave dev@ziggurat29.com (2016-04-27).
 	* fs/mount: Fix a backward debug assertion.  Noted by David Sidrane
 	  (2016-04-29).
@@ -11698,7 +11698,7 @@
 	* arch/arm/src/stm32l4: Add support for unique id function to arch;
 	  modified board to support unique id boardctl.  From Dave
 	  dev@ziggurat29.com (2016-05-03).
-	* Makefile.unix and tools/mkexport.sh: Pass toplevel make to the
+	* Makefile.unix and tools/mkexport.sh: Pass top-level make to the
 	  script to allow -j greater than 1.  From David Sidrane (2016-05-04).
 	* arch/arm/src/stm32, sm32f7, stm32l4: Fix typo in variable name in
 	  serial BREAK logic.  Review other serial implementations for similar