drivers/usbhost/usbhost_cdcecm.c: Added support for Host CDC-ECM

Added support for USB host to use an USB CDC-ECM device.
This class is used for usb-ethernet adapters as well as many modems.

Signed-off-by: daniellizewski <daniellizewski@geotab.com>

boards/arm/stm32h5/nucleo-h563zi/configs/nshusbnet/defconfig

@@ -0,0 +1,71 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_STANDARD_SERIAL is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="nucleo-h563zi"
+CONFIG_ARCH_BOARD_NUCLEO_H563ZI=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_CHIP="stm32h5"
+CONFIG_ARCH_CHIP_STM32H563ZI=y
+CONFIG_ARCH_CHIP_STM32H5=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARMV8M_STACKCHECK_NONE=y
+CONFIG_BOARD_LOOPSPERMSEC=9251
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_ASSERTIONS=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEBUG_USB=y
+CONFIG_DEBUG_USB_ERROR=y
+CONFIG_DEBUG_USB_WARN=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_LINE_MAX=64
+CONFIG_NET=y
+CONFIG_NETDB_DNSCLIENT=y
+CONFIG_NETDEV_LATEINIT=y
+CONFIG_NETINIT_DHCPC=y
+CONFIG_NETUTILS_DHCPC=y
+CONFIG_NETUTILS_TELNETD=y
+CONFIG_NET_ETH_PKTSIZE=1514
+CONFIG_NET_ICMP_SOCKET=y
+CONFIG_NET_PKT=y
+CONFIG_NET_ROUTE=y
+CONFIG_NET_TCP=y
+CONFIG_NET_UDP=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=655360
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_READLINE_TABCOMPLETION=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_LPWORK=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_STACK_COLORATION=y
+CONFIG_STM32H5_USART3=y
+CONFIG_STM32H5_USBFS_HOST=y
+CONFIG_STM32H5_USE_HSE=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_PING=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_USART3_SERIAL_CONSOLE=y
+CONFIG_USBHOST_CDCECM=y
+CONFIG_USBHOST_COMPOSITE=y
+CONFIG_USBHOST_CONFIGURATION_SELECTION=y
+CONFIG_USBHOST_HUB=y

boards/arm/stm32h5/nucleo-h563zi/src/stm32_usb.c

@@ -171,6 +171,17 @@ int stm32_usbhost_initialize(void)
     }
 #endif
 
+#ifdef CONFIG_USBHOST_CDCECM
+  /* Register the CDC-ECM class driver */
+
+  ret = usbhost_cdcecm_initialize();
+  if (ret < 0)
+    {
+      uerr("ERROR: Failed to register CDC-ACM class: %d\n", ret);
+      return ret;
+    }
+#endif
+
   /* Then get an instance of the USB host interface */
 
   uinfo("Initialize USB host\n");