greybus: loopback: fix broken tabs in greybus_protocols.h

Copy/paste of code from one file to another missed inappropriate use of tab
after define.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/greybus_protocols.h

@@ -660,14 +660,14 @@ struct gb_uart_serial_state_request {
 /* Loopback */
 
 /* Version of the Greybus loopback protocol we support */
-#define	GB_LOOPBACK_VERSION_MAJOR		0x00
-#define	GB_LOOPBACK_VERSION_MINOR		0x01
+#define GB_LOOPBACK_VERSION_MAJOR		0x00
+#define GB_LOOPBACK_VERSION_MINOR		0x01
 
 /* Greybus loopback request types */
-#define	GB_LOOPBACK_TYPE_INVALID		0x00
-#define	GB_LOOPBACK_TYPE_PROTOCOL_VERSION	0x01
-#define	GB_LOOPBACK_TYPE_PING			0x02
-#define	GB_LOOPBACK_TYPE_TRANSFER		0x03
+#define GB_LOOPBACK_TYPE_INVALID		0x00
+#define GB_LOOPBACK_TYPE_PROTOCOL_VERSION	0x01
+#define GB_LOOPBACK_TYPE_PING			0x02
+#define GB_LOOPBACK_TYPE_TRANSFER		0x03
 #define GB_LOOPBACK_TYPE_SINK			0x04
 
 struct gb_loopback_transfer_request {