MX28: Fix a typo in mx28_reg_8 macro

The macro mistakenly referred to 32bit struct instead of 8bit one.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Acked-by: Marek Vasut <marex@denx.de>

arch/arm/include/asm/arch-mx28/regs-common.h

@@ -70,7 +70,7 @@ struct mx28_register_32 {
 #define	mx28_reg_8(name)				\
 	union {						\
 		struct { __mx28_reg_8(name) };		\
-		struct mx28_register_32 name##_reg;	\
+		struct mx28_register_8 name##_reg;	\
 	};
 
 #define	mx28_reg_32(name)				\