southbridge/intel/lynxpoint: Use common gpio.c

Use shared gpio code from common folder, except for
INTEL_LYNXPOINT_LP, which has it's own gpio code.

Needs test on real hardware !

Change-Id: Iccc6d254bafb927b6470704cec7c9dd7528e2c68
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/13615
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/southbridge/intel/lynxpoint/Kconfig b/src/southbridge/intel/lynxpoint/Kconfig
index 01556a4..744a31e 100644
--- a/src/southbridge/intel/lynxpoint/Kconfig
+++ b/src/southbridge/intel/lynxpoint/Kconfig
@@ -30,6 +30,7 @@
 	select SPI_FLASH
 	select HAVE_INTEL_FIRMWARE
 	select HAVE_SPI_CONSOLE_SUPPORT
+	select SOUTHBRIDGE_INTEL_COMMON_GPIO if !INTEL_LYNXPOINT_LP
 
 config INTEL_LYNXPOINT_LP
 	bool