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/conga-qeval20-qa3-e3845-internal-uart_defconfig b/configs/conga-qeval20-qa3-e3845-internal-uart_defconfig
index 419ba28..9d6c363 100644
--- a/configs/conga-qeval20-qa3-e3845-internal-uart_defconfig
+++ b/configs/conga-qeval20-qa3-e3845-internal-uart_defconfig
@@ -16,6 +16,7 @@
 CONFIG_BOOTSTAGE=y
 CONFIG_BOOTSTAGE_REPORT=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_ARCH_MISC_INIT=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_CPU=y
 # CONFIG_CMD_IMLS is not set