ARM: mach-shmobile: early console support using earlyprintk

Add support for early console to the SH-Mobile boards.

Simply perform an early platform probe for "earlyprintk"
to trigger the early serial console code in sh-sci.c.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/board-g4evm.c b/arch/arm/mach-shmobile/board-g4evm.c
index 0d2948f..0ddde03 100644
--- a/arch/arm/mach-shmobile/board-g4evm.c
+++ b/arch/arm/mach-shmobile/board-g4evm.c
@@ -105,9 +105,10 @@
 {
 	iotable_init(g4evm_io_desc, ARRAY_SIZE(g4evm_io_desc));
 
-	/* setup early devices and clocks here as well */
+	/* setup early devices, clocks and console here as well */
 	sh7377_add_early_devices();
 	sh7367_clock_init(); /* use g3 clocks for now */
+	shmobile_setup_console();
 }
 
 static void __init g4evm_init(void)