Convert CONFIG_FSL_QIXIS et al to Kconfig

This converts the following to Kconfig:
   CONFIG_FSL_QIXIS
   CONFIG_QIXIS_I2C_ACCESS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1028ardb_tfa_defconfig b/configs/ls1028ardb_tfa_defconfig
index 7618eea..99a73c9 100644
--- a/configs/ls1028ardb_tfa_defconfig
+++ b/configs/ls1028ardb_tfa_defconfig
@@ -11,6 +11,7 @@
 CONFIG_ENV_SECT_SIZE=0x20000
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls1028a-rdb"
+CONFIG_FSL_QIXIS=y
 CONFIG_FSPI_AHB_EN_4BYTE=y
 CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT=y
 CONFIG_SEC_FIRMWARE_ARMV8_PSCI=y