armv8: ls1028aqds: define ARCH_MISC_INIT to handle mux

Define ARCH_MISC_INIT for LS1028AQDS platform to handle board
related mux.

Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a693f15..162ac85 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1308,6 +1308,7 @@
 	select ARMV8_MULTIENTRY
 	select ARCH_SUPPORT_TFABOOT
 	select BOARD_LATE_INIT
+	select ARCH_MISC_INIT
 	help
 	  Support for Freescale LS1028AQDS platform
 	  The LS1028A Development System (QDS) is a high-performance