Convert CONFIG_ARCH_MISC_INIT to Kconfig

This converts the following to Kconfig:
   CONFIG_ARCH_MISC_INIT

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/ts4600_defconfig b/configs/ts4600_defconfig
index 680a13c..209aa08 100644
--- a/configs/ts4600_defconfig
+++ b/configs/ts4600_defconfig
@@ -8,6 +8,7 @@
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL=y
+CONFIG_ARCH_MISC_INIT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set