usb: musb-new: CONFIG_MUSB prefix replacement with CONFIG_USB_MUSB

USB-related options are usually prefixed with CONFIG_USB and platform-specific
adaptation for the MUSB controller already have a CONFIG_USB_MUSB prefix, so
this switches all MUSB-related options to a CONFIG_USB_MUSB prefix, for
consistency.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
diff --git a/board/siemens/draco/board.c b/board/siemens/draco/board.c
index 2697762..4882314 100644
--- a/board/siemens/draco/board.c
+++ b/board/siemens/draco/board.c
@@ -267,7 +267,7 @@
 };
 
 #if defined(CONFIG_DRIVER_TI_CPSW) || \
-	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
+	(defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET))
 int board_eth_init(bd_t *bis)
 {
 	struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
diff --git a/board/siemens/pxm2/board.c b/board/siemens/pxm2/board.c
index 4d8ba3c..750f338 100644
--- a/board/siemens/pxm2/board.c
+++ b/board/siemens/pxm2/board.c
@@ -213,7 +213,7 @@
 #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
 
 #if defined(CONFIG_DRIVER_TI_CPSW) || \
-	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
+	(defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET))
 int board_eth_init(bd_t *bis)
 {
 	int n = 0;
diff --git a/board/siemens/rut/board.c b/board/siemens/rut/board.c
index fb840f7..f94e3e5 100644
--- a/board/siemens/rut/board.c
+++ b/board/siemens/rut/board.c
@@ -174,7 +174,7 @@
 };
 
 #if defined(CONFIG_DRIVER_TI_CPSW) || \
-	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
+	(defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET))
 int board_eth_init(bd_t *bis)
 {
 	struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;