qcom: add gpu firmwares for X1P42100 chipset

Add the following gpu firmwares required for Snapdragon X1 Plus
(X1P42100) chipset:

qcom/gen71500_gmu.bin: v4.06.04
qcom/gen71500_sqe.fw: v1.81
qcom/x1p42100/gen71500_zap.mbn: v0.13

Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>

WHENCE

@@ -6550,6 +6550,9 @@ File: qcom/sa8775p/a663_zap.mbn
 File: qcom/qcs615/a612_zap.mbn
 File: qcom/a623_gmu.bin
 File: qcom/qcs8300/a623_zap.mbn
+File: qcom/gen71500_gmu.bin
+File: qcom/gen71500_sqe.fw
+File: qcom/x1p42100/gen71500_zap.mbn
 
 Licence: Redistributable. See LICENSE.qcom and qcom/NOTICE.txt for details