mx6sxsabresd: Staticize i2c_pad_info1

i2c_pad_info1 is only used locally, so it can be made static.

Fix the following sparse warning:

board/freescale/mx6sxsabresd/mx6sxsabresd.c:160:22: warning: symbol 'i2c_pad_info1' was not declared. Should it be static?

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 5eaec1b..68d3718 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -157,7 +157,7 @@
 
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 /* I2C1 for PMIC */
-struct i2c_pads_info i2c_pad_info1 = {
+static struct i2c_pads_info i2c_pad_info1 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_GPIO1_IO00__I2C1_SCL | PC,
 		.gpio_mode = MX6_PAD_GPIO1_IO00__GPIO1_IO_0 | PC,