msm: allow uart to be conditionally disabled

Some MSM targets don't select the debug UART in this way. For those we
need to disable this selection mechanism.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index bb3a68b..d658e5f 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -11,6 +11,7 @@
 	select MSM_SMD_PKG3
 	select CPU_V6
 	select MSM_PROC_COMM
+	select HAS_MSM_DEBUG_UART_PHYS
 
 config ARCH_MSM7X30
 	bool "MSM7x30"
@@ -21,6 +22,7 @@
 	select MSM_REMOTE_SPINLOCK_DEKKERS
 	select MSM_GPIOMUX
 	select MSM_PROC_COMM
+	select HAS_MSM_DEBUG_UART_PHYS
 
 config ARCH_QSD8X50
 	bool "QSD8X50"
@@ -31,6 +33,8 @@
 	select MSM_REMOTE_SPINLOCK_LDREX
 	select MSM_GPIOMUX
 	select MSM_PROC_COMM
+	select HAS_MSM_DEBUG_UART_PHYS
+
 endchoice
 
 config MSM_SOC_REV_A
@@ -41,6 +45,9 @@
 config  ARCH_MSM_SCORPION
 	bool
 
+config HAS_MSM_DEBUG_UART_PHYS
+	bool
+
 config  MSM_VIC
 	bool
 
@@ -93,6 +100,7 @@
 	default 2 if MSM_DEBUG_UART2
 	default 3 if MSM_DEBUG_UART3
 
+if HAS_MSM_DEBUG_UART_PHYS
 choice
 	prompt "Debug UART"
 
@@ -110,6 +118,7 @@
 	config MSM_DEBUG_UART3
 		bool "UART3"
 endchoice
+endif
 
 config MSM_SMD_PKG3
 	bool