bcm53xx: fix early serial console

This device actually has a 8250 serial with a shift of 0.
Tested this on a BCM4708.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 42538

target/linux/bcm53xx/patches-3.14/060-ARM-BCM5301X-fix-early-serial-console.patch

+From 310a267714f7565dba8934dd51cdead6adc3b630 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 14 Sep 2014 21:02:35 +0200
+Subject: [PATCH 4/4] ARM: BCM5301X: fix early serial console
+
+This device actually has a 8250 serial with a shift of 0.
+Tested this on a BCM4708.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/arm/Kconfig.debug | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/Kconfig.debug
++++ b/arch/arm/Kconfig.debug
+@@ -109,7 +109,7 @@ choice
+ 	config DEBUG_BCM_5301X
+ 		bool "Kernel low-level debugging on BCM5301X UART1"
+ 		depends on ARCH_BCM_5301X
+-		select DEBUG_UART_PL01X
++		select DEBUG_UART_8250
+ 
+ 	config DEBUG_BCM_KONA_UART
+ 		bool "Kernel low-level debugging messages via BCM KONA UART"
+@@ -1132,7 +1132,7 @@ config DEBUG_UART_VIRT
+ config DEBUG_UART_8250_SHIFT
+ 	int "Register offset shift for the 8250 debug UART"
+ 	depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
+-	default 0 if FOOTBRIDGE || ARCH_IOP32X
++	default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X
+ 	default 2
+ 
+ config DEBUG_UART_8250_WORD