staging: greybus: move es2 to drivers/greybus/

The es2 Greybus host controller has long been stable, so move it out of
drivers/staging/ to drivers/greybus/

Cc: Johan Hovold <johan@kernel.org>
Cc: greybus-dev@lists.linaro.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Alex Elder <elder@kernel.org>
Link: https://lore.kernel.org/r/20190825055429.18547-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/greybus/Kconfig

@@ -14,3 +14,19 @@ menuconfig GREYBUS
 
 	  To compile this code as a module, chose M here: the module
 	  will be called greybus.ko
+
+if GREYBUS
+
+config GREYBUS_ES2
+	tristate "Greybus ES3 USB host controller"
+	depends on USB
+	---help---
+	  Select this option if you have a Toshiba ES3 USB device that
+	  acts as a Greybus "host controller".  This device is a bridge
+	  from a USB device to a Unipro network.
+
+	  To compile this code as a module, chose M here: the module
+	  will be called gb-es2.ko
+
+endif	# GREYBUS
+

drivers/greybus/Makefile

@@ -17,3 +17,10 @@ obj-$(CONFIG_GREYBUS)		+= greybus.o
 
 # needed for trace events
 ccflags-y += -I$(src)
+
+# Greybus Host controller drivers
+gb-es2-y := es2.o
+
+obj-$(CONFIG_GREYBUS_ES2)	+= gb-es2.o
+
+

drivers/greybus/es2.c

@@ -15,7 +15,7 @@
 #include <asm/unaligned.h>
 
 #include "arpc.h"
-#include "../../greybus/greybus_trace.h"
+#include "greybus_trace.h"
 
 
 /* Default timeout for USB vendor requests. */

drivers/staging/greybus/Kconfig

@@ -1,17 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 if GREYBUS
 
-config GREYBUS_ES2
-	tristate "Greybus ES3 USB host controller"
-	depends on USB
-	---help---
-	  Select this option if you have a Toshiba ES3 USB device that
-	  acts as a Greybus "host controller".  This device is a bridge
-	  from a USB device to a Unipro network.
-
-	  To compile this code as a module, chose M here: the module
-	  will be called gb-es2.ko
-
 config GREYBUS_AUDIO
 	tristate "Greybus Audio Class driver"
 	depends on SOUND

drivers/staging/greybus/Makefile

@@ -2,11 +2,6 @@
 # needed for trace events
 ccflags-y += -I$(src)
 
-# Greybus Host controller drivers
-gb-es2-y := es2.o
-
-obj-$(CONFIG_GREYBUS_ES2)	+= gb-es2.o
-
 # Greybus class drivers
 gb-bootrom-y		:= bootrom.o
 gb-camera-y		:= camera.o