ARM: imx_v6_v7_defconfig: Enable SIOX bus

Now that there is a board making use of this bus is available
enable the siox code to increase compile coverage.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -211,6 +211,7 @@ CONFIG_SPI_GPIO=y
 CONFIG_SPI_IMX=y
 CONFIG_SPI_FSL_DSPI=y
 CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_SIOX=m
 CONFIG_GPIO_MAX732X=y
 CONFIG_GPIO_MC9S08DZ60=y
 CONFIG_GPIO_PCA953X=y
@@ -405,6 +406,8 @@ CONFIG_NVMEM_VF610_OCOTP=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_MUX_MMIO=y
+CONFIG_SIOX=m
+CONFIG_SIOX_BUS_GPIO=m
 CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y