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/ls1021aqds_ddr4_nor_defconfig b/configs/ls1021aqds_ddr4_nor_defconfig
index 6d572c8..7e08224 100644
--- a/configs/ls1021aqds_ddr4_nor_defconfig
+++ b/configs/ls1021aqds_ddr4_nor_defconfig
@@ -12,6 +12,8 @@
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="ls1021a-qds-duart"
 CONFIG_FSL_USE_PCA9547_MUX=y
+CONFIG_FSL_QIXIS=y
+# CONFIG_QIXIS_I2C_ACCESS is not set
 CONFIG_AHCI=y
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff