NuttX stm32f7 fully re-enable dcache with write back (#12435)

- fixes https://github.com/PX4/Firmware/issues/12216
 - includes latest PX4/NuttX and apps update 7.29+

boards/av/x-v1/default.cmake

@@ -49,7 +49,6 @@ px4_add_board(
 		#roboclaw
 		stm32
 		stm32/adc
-		stm32/armv7-m_dcache
 		#stm32/tone_alarm
 		tap_esc
 		telemetry # all available telemetry drivers

boards/av/x-v1/nuttx-config/nsh/defconfig

@@ -49,12 +49,10 @@ CONFIG_ARCH_MATH_H=y
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARMV7M_BASEPRI_WAR=y
 CONFIG_ARMV7M_DCACHE=y
-CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
 CONFIG_ARMV7M_DTCM=y
 CONFIG_ARMV7M_ICACHE=y
 CONFIG_ARMV7M_MEMCPY=y
 CONFIG_ARMV7M_USEBASEPRI=y
-CONFIG_BOARDCTL_FINALINIT=y
 CONFIG_BOARDCTL_RESET=y
 CONFIG_BOARD_CRASHDUMP=y
 CONFIG_BOARD_LOOPSPERMSEC=22114

boards/av/x-v1/src/init.c

@@ -143,32 +143,6 @@ __EXPORT void board_on_reset(int status)
 	}
 }
 
-/****************************************************************************
- * Name: board_app_finalinitialize
- *
- * Description:
- *   Perform application specific initialization.  This function is never
- *   called directly from application code, but only indirectly via the
- *   (non-standard) boardctl() interface using the command
- *   BOARDIOC_FINALINIT.
- *
- * Input Parameters:
- *   arg - The argument has no meaning.
- *
- * Returned Value:
- *   Zero (OK) is returned on success; a negated errno value is returned on
- *   any failure to indicate the nature of the failure.
- *
- ****************************************************************************/
-
-#ifdef CONFIG_BOARDCTL_FINALINIT
-int board_app_finalinitialize(uintptr_t arg)
-{
-	board_configure_dcache(1);
-	return 0;
-}
-#endif
-
 /************************************************************************************
  * Name: stm32_boardinitialize
  *
@@ -223,9 +197,6 @@ stm32_boardinitialize(void)
 
 __EXPORT int board_app_initialize(uintptr_t arg)
 {
-
-	board_configure_dcache(0);
-
 	px4_platform_init();
 
 	/* configure the DMA allocator */