msm: make debugging UART (for DEBUG_LL) configurable

Provides options to select one of the three "lowspeed" UARTs
on MSM7k SoCs for DEBUG_LL output from the zImage decompressor
and kernel.

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index d140abc..35f2a90 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -3,6 +3,30 @@
 comment "MSM Board Type"
 	depends on ARCH_MSM
 
+config MSM_DEBUG_UART
+	int
+	default 1 if MSM_DEBUG_UART1
+	default 2 if MSM_DEBUG_UART2
+	default 3 if MSM_DEBUG_UART3
+
+choice
+	prompt "Debug UART"
+
+	default MSM_DEBUG_UART_NONE
+
+	config MSM_DEBUG_UART_NONE
+		bool "None"
+
+	config MSM_DEBUG_UART1
+		bool "UART1"
+
+	config MSM_DEBUG_UART2
+		bool "UART2"
+
+	config MSM_DEBUG_UART3
+		bool "UART3"
+endchoice
+
 config MACH_HALIBUT
 	depends on ARCH_MSM
 	default y