sniper: Add build guards around MUSB support code

If MUSB support is disabled, these parts of the code will fail to build.

Cc: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/lg/sniper/sniper.c b/board/lg/sniper/sniper.c
index 3065461..a70166a 100644
--- a/board/lg/sniper/sniper.c
+++ b/board/lg/sniper/sniper.c
@@ -43,6 +43,7 @@
 	.plat = &serial_omap_plat
 };
 
+#if defined(CONFIG_USB_MUSB_HOST) || defined(CONFIG_USB_MUSB_GADGET)
 static struct musb_hdrc_config musb_config = {
 	.multipoint = 1,
 	.dyn_fifo = 1,
@@ -61,6 +62,7 @@
 	.platform_ops = &omap2430_ops,
 	.board_data = &musb_board_data,
 };
+#endif
 
 void set_muxconf_regs(void)
 {
@@ -147,8 +149,9 @@
 	omap_die_id_serial();
 
 	/* MUSB */
-
+#if defined(CONFIG_USB_MUSB_HOST) || defined(CONFIG_USB_MUSB_GADGET)
 	musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
+#endif
 
 	return 0;
 }