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/ls2080aqds_SECURE_BOOT_defconfig b/configs/ls2080aqds_SECURE_BOOT_defconfig
index fe4a3ae..dfe180d 100644
--- a/configs/ls2080aqds_SECURE_BOOT_defconfig
+++ b/configs/ls2080aqds_SECURE_BOOT_defconfig
@@ -8,6 +8,8 @@
 CONFIG_NXP_ESBC=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2080a-qds"
 CONFIG_FSL_USE_PCA9547_MUX=y
+CONFIG_FSL_QIXIS=y
+# CONFIG_QIXIS_I2C_ACCESS is not set
 CONFIG_FSL_LS_PPA=y
 CONFIG_AHCI=y
 # CONFIG_SYS_MALLOC_F is not set