Convert CONFIG_SPL_DRIVERS_MISC et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SPL_DRIVERS_MISC
   CONFIG_SPL_ENV_SUPPORT
   CONFIG_SPL_GPIO
   CONFIG_SPL_I2C
   CONFIG_SPL_LDSCRIPT
   CONFIG_SPL_LIBCOMMON_SUPPORT
   CONFIG_SPL_LIBGENERIC_SUPPORT
   CONFIG_SPL_LOAD_FIT_ADDRESS
   CONFIG_SPL_MMC
   CONFIG_SPL_NAND_SUPPORT
   CONFIG_SPL_NO_CPU_SUPPORT
   CONFIG_SPL_OS_BOOT
   CONFIG_SPL_POWER
   CONFIG_SPL_STACK_R
   CONFIG_SPL_STACK_R_ADDR
   CONFIG_SPL_WATCHDOG
   CONFIG_SPL_TEXT_BASE

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1046aqds_nand_defconfig b/configs/ls1046aqds_nand_defconfig
index 0f640de..58a8a91 100644
--- a/configs/ls1046aqds_nand_defconfig
+++ b/configs/ls1046aqds_nand_defconfig
@@ -2,6 +2,8 @@
 CONFIG_TARGET_LS1046AQDS=y
 CONFIG_SYS_TEXT_BASE=0x82000000
 CONFIG_SYS_MALLOC_LEN=0x102000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=2
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff
@@ -17,6 +19,7 @@
 CONFIG_FSL_USE_PCA9547_MUX=y
 CONFIG_FSL_LS_PPA=y
 CONFIG_SPL_SERIAL=y
+CONFIG_SPL_DRIVERS_MISC=y
 CONFIG_SPL=y
 CONFIG_AHCI=y
 CONFIG_DISTRO_DEFAULTS=y
@@ -35,7 +38,11 @@
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x110
+CONFIG_SPL_ENV_SUPPORT=y
+CONFIG_SPL_I2C=y
 CONFIG_SPL_MPC8XXX_INIT_DDR=y
+CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_WATCHDOG=y
 CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_IMLS=y
 CONFIG_CMD_GREPENV=y