mb/google/slippy/peppy: Set cypress TP IRQ to Level vs Edge

Change the IRQ triggering from edge to level for cypress touchpad
on peppy variant for compatibility with Windows drivers.

TEST=boot Linux 5.x/6.x, Windows 10/11 on peppy, verify touchpad
functional.

Change-Id: Iecf6cb919bf16ec9180ca050e7eafe55247337ed
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71197
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/google/slippy/variants/peppy/include/variant/acpi/mainboard.asl

@@ -60,7 +60,7 @@ Scope (\_SB.PCI0.I2C0)
 				AddressingMode7Bit,       // AddressingMode
 				"\\_SB.PCI0.I2C0"        // ResourceSource
 			)
-			Interrupt (ResourceConsumer, Edge, ActiveLow, Shared)
+			Interrupt (ResourceConsumer, Level, ActiveLow, Shared)
 			{
 				BOARD_TRACKPAD_IRQ
 			}