slippy/falco/peppy: make GPIO interrupts be edge triggered

The drivers are designed to work with an edge triggered interrupt.

Change-Id: I35a121ecfb6409bb9049f4d1e034185bb3bb7557
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/61664
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4360
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/google/falco/acpi/mainboard.asl b/src/mainboard/google/falco/acpi/mainboard.asl
index f9bcc12..84e8a25 100644
--- a/src/mainboard/google/falco/acpi/mainboard.asl
+++ b/src/mainboard/google/falco/acpi/mainboard.asl
@@ -49,7 +49,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TRACKPAD_IRQ
 			}
@@ -84,7 +84,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TOUCHSCREEN_IRQ
 			}
diff --git a/src/mainboard/google/peppy/acpi/mainboard.asl b/src/mainboard/google/peppy/acpi/mainboard.asl
index 7c892d1..194b76e 100644
--- a/src/mainboard/google/peppy/acpi/mainboard.asl
+++ b/src/mainboard/google/peppy/acpi/mainboard.asl
@@ -49,7 +49,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TRACKPAD_IRQ
 			}
@@ -84,7 +84,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TOUCHSCREEN_IRQ
 			}
diff --git a/src/mainboard/google/slippy/acpi/mainboard.asl b/src/mainboard/google/slippy/acpi/mainboard.asl
index 0047772..130df6219 100644
--- a/src/mainboard/google/slippy/acpi/mainboard.asl
+++ b/src/mainboard/google/slippy/acpi/mainboard.asl
@@ -49,7 +49,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TRACKPAD_IRQ
 			}
@@ -84,7 +84,7 @@
 
 		Name (_CRS, ResourceTemplate()
 		{
-			Interrupt (ResourceConsumer, Level, ActiveLow)
+			Interrupt (ResourceConsumer, Edge, ActiveLow)
 			{
 				BOARD_TOUCHSCREEN_IRQ
 			}