am335x, guardian: update guardian board

  - add BOARD_LATE_INIT function calls in board.c
  - add swi_status detection in board.c
  - mux: add guardian interfaces to single pinmux structure
  - am33xx, kconfig: add BOARD_LATE_INIT for GUARDIAN board

Signed-off-by: Moses Christopher <BollavarapuMoses.Christopher@in.bosch.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/am33xx/Kconfig b/arch/arm/mach-omap2/am33xx/Kconfig
index 7f6b344..39d9c28 100644
--- a/arch/arm/mach-omap2/am33xx/Kconfig
+++ b/arch/arm/mach-omap2/am33xx/Kconfig
@@ -89,6 +89,7 @@
 
 config TARGET_AM335X_GUARDIAN
 	bool "Support am335x based guardian board from bosch"
+	select BOARD_LATE_INIT
 	select DM
 	select DM_SERIAL
 	select DM_GPIO