rockchip: rk3036: fix grf macro define

Some of macros definition are not correct, fix them according to TRM.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/include/asm/arch-rockchip/grf_rk3036.h

@@ -209,10 +209,10 @@ enum {
 	GPIO1A3_I2S_LRCKTX,
 
 	GPIO1A2_SHIFT		= 4,
-	GPIO1A2_MASK		= 6 << GPIO1A2_SHIFT,
+	GPIO1A2_MASK		= 3 << GPIO1A2_SHIFT,
 	GPIO1A2_GPIO		= 0,
 	GPIO1A2_I2S_LRCKRX,
-	GPIO1A2_I2S_PWM1_0,
+	GPIO1A2_PWM1_0,
 
 	GPIO1A1_SHIFT		= 2,
 	GPIO1A1_MASK		= 1 << GPIO1A1_SHIFT,