mb/google/nissa/var/yaviks: Enable ISH driver and firmware name

Enable ISH driver and set firmware name as "adl_ish_lite.bin"

BUG=b:242291814
TEST=boot into kernel, and check dmesg
"ISH firmware intel/adl_ish_lite.bin loaded"

Change-Id: I4badabba1a0cfceb77fc91f21953496152f19615
Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69606
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/yaviks/overridetree.cb

@@ -212,7 +212,12 @@ chip soc/intel/alderlake
 			end
 		end
 		device ref emmc on end
-		device ref ish on end
+		device ref ish on
+			chip drivers/intel/ish
+				register "firmware_name" = ""adl_ish_lite.bin""
+				device generic 0 on end
+			end
+		end
 		device ref ufs on end
 		device ref pch_espi on
 			chip ec/google/chromeec