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/logicpd/am3517evm/am3517evm.c b/board/logicpd/am3517evm/am3517evm.c
index 24be6ea..24ff9c3 100644
--- a/board/logicpd/am3517evm/am3517evm.c
+++ b/board/logicpd/am3517evm/am3517evm.c
@@ -65,12 +65,12 @@
 };
 
 static struct musb_hdrc_platform_data musb_plat = {
-#if defined(CONFIG_MUSB_HOST)
+#if defined(CONFIG_USB_MUSB_HOST)
 	.mode           = MUSB_HOST,
-#elif defined(CONFIG_MUSB_GADGET)
+#elif defined(CONFIG_USB_MUSB_GADGET)
 	.mode		= MUSB_PERIPHERAL,
 #else
-#error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
+#error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
 #endif
 	.config         = &musb_config,
 	.power          = 250,
@@ -159,7 +159,7 @@
 }
 #endif
 
-#if defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)
+#if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
 int board_eth_init(bd_t *bis)
 {
 	int rv, n = 0;