usb: musb: make sure the register layout is packed

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Remy Bohmer <linux@bohmer.net>

drivers/usb/musb/musb_core.h

@@ -137,7 +137,7 @@ struct musb_regs {
 		struct musb_epN_regs epN;
 	} ep[16];
 
-} __attribute__((aligned(32)));
+} __attribute__((packed, aligned(32)));
 
 /*
  * MUSB Register bits