drivers: usb: move common driver headers to include

Let's organize the common USB driver headers in include.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>

Author: jfischer-no

drivers/usb/common/usb_dwc2_hw.h renamed to drivers/usb/common/include/usb_dwc2_hw.h

@@ -3,7 +3,7 @@
 if(CONFIG_USB_DEVICE_DRIVER)
 
 zephyr_library()
-zephyr_library_include_directories(${ZEPHYR_BASE}/drivers/usb/common/)
+zephyr_library_include_directories(${ZEPHYR_BASE}/drivers/usb/common/include)
 
 zephyr_library_sources_ifdef(CONFIG_USB_DW           usb_dc_dw.c)
 zephyr_library_sources_ifdef(CONFIG_USB_DC_RPI_PICO  usb_dc_rpi_pico.c)

drivers/usb/device/CMakeLists.txt

@@ -4,7 +4,7 @@
 zephyr_library()
 
 zephyr_library_sources(udc_common.c)
-zephyr_library_include_directories(${ZEPHYR_BASE}/drivers/usb/common/)
+zephyr_library_include_directories(${ZEPHYR_BASE}/drivers/usb/common/include)
 
 zephyr_library_sources_ifdef(CONFIG_UDC_DWC2 udc_dwc2.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_NRF udc_nrf.c)