Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on alpha

Architectures which might use an i8042 for serial IO to keyboard,
mouse, etc should select ARCH_MIGHT_HAVE_PC_SERIO.

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index d39dc9b..7ce5ce5 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -2,6 +2,7 @@
 	bool
 	default y
 	select ARCH_MIGHT_HAVE_PC_PARPORT
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select HAVE_AOUT
 	select HAVE_IDE
 	select HAVE_OPROFILE