tty: serial: msm_serial: Remove dead code

This config no longer exists now that mach-msm has been removed.
Delete it and the associated code.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index c9dbc62..04d7a96 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1044,7 +1044,7 @@
 
 config SERIAL_MSM
 	bool "MSM on-chip serial port support"
-	depends on ARCH_MSM || ARCH_QCOM
+	depends on ARCH_QCOM
 	select SERIAL_CORE
 
 config SERIAL_MSM_CONSOLE