mb/intel/tglrvp: Enable ISH driver and register firmware name

BRANCH=none
BUG=b:145946347
TEST=boot to OS with TGL RVP UP3,
then copied ISH firmware to host file system /lib/firmware/intel/tglrvp_ish.bin
check "dmesg |grep ish", it shows:
ish-loader: ISH firmware intel/tglrvp_ish.bin loaded
cros_ec_ishtp: Chrome EC device registered
Those means shim loader in coreboot has loaded ISH firmware, and
firmware is running successfully.

Signed-off-by: Hu, Hebo <hebo.hu@intel.com>
Signed-off-by: li feng <li1.feng@intel.com>
Change-Id: I1ee8050aef6ec0828f16ef2695b5347278caa820
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39481
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
index 643db36..586fd26 100644
--- a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
+++ b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
@@ -129,7 +129,12 @@
 		device pci 10.2 off end # CNVi: BT		0xA0F5 - A0F7
 		device pci 10.6 off end # THC0			0xA0D0
 		device pci 10.7 off end # THC1			0xA0D1
-		device pci 12.0 off end # SensorHUB		0xA0FC
+		device pci 12.0 on      # SensorHUB		0xA0FC
+			chip drivers/intel/ish
+				register "firmware_name" = ""tglrvp_ish.bin""
+				device generic 0 on end
+			end
+		end
 		device pci 12.6 off end # GSPI2			0x34FB
 		device pci 13.0 off end # GSPI3			0xA0FD
 		device pci 14.0 on  end # USB3.1 xHCI 		0xA0ED