MX31: Removed warnings for iomux function

Removed warnings generated in the mx31_set_pad() function.

Signed-off-by: Stefano Babic <sbabic@denx.de>

arch/arm/cpu/arm1136/mx31/generic.c

@@ -93,17 +93,16 @@ void mx31_gpio_mux(unsigned long mode)
 
 void mx31_set_pad(enum iomux_pins pin, u32 config)
 {
-	u32 field, l;
-	void *reg;
+	u32 field, l, reg;
 
 	pin &= IOMUX_PADNUM_MASK;
 	reg = (IOMUXC_BASE + 0x154) + (pin + 2) / 3 * 4;
 	field = (pin + 2) % 3;
 
-	l = __raw_readl(reg);
+	l = __REG(reg);
 	l &= ~(0x1ff << (field * 10));
 	l |= config << (field * 10);
-	__raw_writel(l, reg);
+	__REG(reg) = l;
 
 }
 

arch/arm/include/asm/arch-mx31/mx31.h

@@ -27,6 +27,7 @@
 extern u32 mx31_get_ipg_clk(void);
 #define imx_get_uartclk mx31_get_ipg_clk
 extern void mx31_gpio_mux(unsigned long mode);
+extern void mx31_set_pad(enum iomux_pins pin, u32 config);
 
 void mx31_uart1_hw_init(void);
 void mx31_spi2_hw_init(void);