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/ls1012aqds_tfa_defconfig b/configs/ls1012aqds_tfa_defconfig
index 6c6c664..09dbac2 100644
--- a/configs/ls1012aqds_tfa_defconfig
+++ b/configs/ls1012aqds_tfa_defconfig
@@ -9,6 +9,7 @@
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls1012a-qds"
+CONFIG_FSL_QIXIS=y
 CONFIG_QSPI_AHB_INIT=y
 CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT=y
 CONFIG_SEC_FIRMWARE_ARMV8_PSCI=y