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_qspi_defconfig b/configs/ls2080aqds_qspi_defconfig
index 4b72646..6cbd5c9 100644
--- a/configs/ls2080aqds_qspi_defconfig
+++ b/configs/ls2080aqds_qspi_defconfig
@@ -9,6 +9,7 @@
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2080a-qds"
 CONFIG_FSL_USE_PCA9547_MUX=y
+CONFIG_FSL_QIXIS=y
 CONFIG_AHCI=y
 CONFIG_REMAKE_ELF=y
 CONFIG_MP=y