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/am335x_evm_norboot_defconfig b/configs/am335x_evm_norboot_defconfig
index d1523d6..1226b7c 100644
--- a/configs/am335x_evm_norboot_defconfig
+++ b/configs/am335x_evm_norboot_defconfig
@@ -7,6 +7,7 @@
 CONFIG_NOR_BOOT=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_VERSION_VARIABLE=y
+CONFIG_ARCH_MISC_INIT=y
 CONFIG_BOARD_EARLY_INIT_F=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_ASKENV=y