mb/google/trulo/var/pujjolo: Add ISH firmware config

Due to Pujjoquince does not have ISH, thus define bit 29 in
firmware_config to indicate ISH presence per platform.

BUG=b:417599885
BRANCH=none
TEST= Use the command ls /dev/cros_ and no cros_ish option
will appear

Change-Id: I286300eadf7991d3a30936f5904ff3eef4480039
Signed-off-by: erin liang <erin.liang@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88364
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

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

@@ -20,6 +20,10 @@ fw_config
 		option WFC_ABSENT               0
 		option WFC_MIPI_OVTI8856        1
 	end
+	field ISH 29
+		option ISH_ABSENT	0
+		option ISH_PRESENT	1
+	end
 end
 chip soc/intel/alderlake
 
@@ -449,7 +453,9 @@ chip soc/intel/alderlake
 			chip drivers/intel/ish
 				register "add_acpi_dma_property" = "true"
 				register "firmware_name" = ""pujjolo_ish.bin""
-				device generic 0 on end
+				device generic 0 on
+					probe ISH ISH_PRESENT
+				end
 			end
 		end
 		device ref ufs on end