samples: usb: shell: host_prj.conf overaly for esp32

Add board support files needed to test the ESP32-S3 devkit
with host support, as well as host_prj.conf used to test the
USB shell with host support exclusively.

Example build command:

  west build -b esp32s3_devkitm/esp32s3/procpu samples/subsys/usb/shell/ \
   -DEXTRA_CONF_FILE=host_prj.conf -DCONFIG_USB_DEVICE_STACK_NEXT=n

Signed-off-by: Roman Leonov <[email protected]>

Author: roma-jam

samples/subsys/usb/shell/boards/esp32s3_devkitm_procpu.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) 2023 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+zephyr_uhc0: &usb_otg {
+	status = "okay";
+};

samples/subsys/usb/shell/host_prj.conf

@@ -0,0 +1,22 @@
+CONFIG_SHELL=y
+
+CONFIG_USB_HOST_STACK=y
+CONFIG_USBH_SHELL=y
+
+# CONFIG_DT_HAS_ZEPHYR_UHC_VIRTUAL_ENABLED=y
+# CONFIG_UHC_VIRTUAL=y
+
+CONFIG_UHC_DWC2=y
+CONFIG_UHC_DWC2_DMA=y
+
+# CONFIG_ASSERT=y                      # Enable asserts
+# CONFIG_LOG=y                         # Logging framework
+# CONFIG_LOG_MODE_IMMEDIATE=y         # Useful in ISRs
+# CONFIG_PRINTK=y                      # Enable printk (low-level logging)
+# CONFIG_STACK_SENTINEL=y             # Detect stack overflows
+# CONFIG_THREAD_NAME=y                # Name threads for easier debugging
+# CONFIG_IRQ_OFFLOAD=y                # Offload handlers in debug code
+
+CONFIG_LOG=y
+CONFIG_USBH_LOG_LEVEL_WRN=y
+CONFIG_UHC_DRIVER_LOG_LEVEL_WRN=y