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/birdland_bav335b_defconfig b/configs/birdland_bav335b_defconfig
index b8a76c4..728a2dd 100644
--- a/configs/birdland_bav335b_defconfig
+++ b/configs/birdland_bav335b_defconfig
@@ -18,6 +18,7 @@
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1"
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_VERSION_VARIABLE=y
+CONFIG_ARCH_MISC_INIT=y
 CONFIG_SPL=y
 CONFIG_SPL_MUSB_NEW_SUPPORT=y
 CONFIG_SPL_OS_BOOT=y