drivers: udc_ambiq: Implemented UDC driver for apollo4p

Added implementation for udc_ambiq with its required Kconfig and
CMakelist updates.

Signed-off-by: Chew Zeh Yang <[email protected]>

Author: zeonchew

drivers/usb/udc/CMakeLists.txt

@@ -18,3 +18,4 @@ zephyr_library_sources_ifdef(CONFIG_UDC_NXP_EHCI udc_mcux_ehci.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_NXP_IP3511 udc_mcux_ip3511.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_NUMAKER udc_numaker.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_RPI_PICO udc_rpi_pico.c)
+zephyr_library_sources_ifdef(CONFIG_UDC_AMBIQ udc_ambiq.c)

drivers/usb/udc/Kconfig

@@ -65,5 +65,6 @@ source "drivers/usb/udc/Kconfig.it82xx2"
 source "drivers/usb/udc/Kconfig.mcux"
 source "drivers/usb/udc/Kconfig.numaker"
 source "drivers/usb/udc/Kconfig.rpi_pico"
+source "drivers/usb/udc/Kconfig.ambiq"
 
 endif # UDC_DRIVER

drivers/usb/udc/Kconfig.ambiq

@@ -0,0 +1,34 @@
+# Copyright (c) 2024 Ambiq Micro Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config UDC_AMBIQ
+	bool "USB device controller driver for ambiq devices"
+	default y
+	depends on DT_HAS_AMBIQ_USB_ENABLED
+	select GPIO
+	select AMBIQ_HAL
+	select AMBIQ_HAL_USE_USB
+	help
+	  Enable USB Device Controller Driver.
+
+config UDC_AMBIQ_STACK_SIZE
+	int "UDC AMBIQ driver internal thread stack size"
+	depends on UDC_AMBIQ
+	default 2048
+	help
+	  AMBIQ driver internal thread stack size.
+
+config UDC_AMBIQ_THREAD_PRIORITY
+	int "UDC AMBIQ driver thread priority"
+	depends on UDC_AMBIQ
+	default 8
+	help
+	  AMBIQ driver thread priority.
+
+
+config UDC_AMBIQ_MAX_QMESSAGES
+	int "UDC AMBIQ maximum number of ISR event messages"
+	range 4 64
+	default 8
+	help
+	  AMBIQ maximum number of ISR event messages.