drivers: most: add USB adapter driver

This patch adds the USB driver source file most_usb.c and
modifies the Makefile and Kconfig accordingly.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1596198058-26541-1-git-send-email-christian.gromm@microchip.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/most/Kconfig

@@ -13,3 +13,14 @@ menuconfig MOST
 	  module will be called most_core.
 
 	  If in doubt, say N here.
+
+if MOST
+config MOST_USB_HDM
+	tristate "USB"
+	depends on USB
+	help
+	  Say Y here if you want to connect via USB to network transceiver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called most_usb.
+endif

drivers/most/Makefile

@@ -2,3 +2,5 @@
 obj-$(CONFIG_MOST) += most_core.o
 most_core-y :=	core.o \
 		configfs.o
+
+obj-$(CONFIG_MOST_USB_HDM) += most_usb.o

drivers/staging/most/Kconfig

@@ -30,6 +30,4 @@ source "drivers/staging/most/dim2/Kconfig"
 
 source "drivers/staging/most/i2c/Kconfig"
 
-source "drivers/staging/most/usb/Kconfig"
-
 endif

drivers/staging/most/usb/Kconfig

-# SPDX-License-Identifier: GPL-2.0
-#
-# MOST USB configuration
-#
-
-config MOST_USB
-	tristate "USB"
-	depends on USB
-	help
-	  Say Y here if you want to connect via USB to network transceiver.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called most_usb.

drivers/staging/most/usb/Makefile

-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_MOST_USB) += most_usb.o
-
-most_usb-objs := usb.o