armv8: fsl: i2c: Put I2C related code under CONFIG_SYS_I2C

I2C code is put under CONFIG_SYS_I2C.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index e614203..a90ee0a 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -260,8 +260,8 @@
 #ifdef CONFIG_SYS_FSL_ERRATUM_A009203
 static void erratum_a009203(void)
 {
-	u8 __iomem *ptr;
 #ifdef CONFIG_SYS_I2C
+	u8 __iomem *ptr;
 #ifdef I2C1_BASE_ADDR
 	ptr = (u8 __iomem *)(I2C1_BASE_ADDR + I2C_DEBUG_REG);