Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on ARM/Footbridge

Architectures which might use an i8042 for serial IO to keyboard,
mouse, etc should select ARCH_MIGHT_HAVE_PC_SERIO.
Signed-off-by: NMark Salter <msalter@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

arch/arm/mach-footbridge/Kconfig

@@ -85,6 +85,7 @@ config FOOTBRIDGE
 # Footbridge in host mode
 config FOOTBRIDGE_HOST
 	bool
+	select ARCH_MIGHT_HAVE_PC_SERIO
 
 # Footbridge in addin mode
 config FOOTBRIDGE_ADDIN