msm-gbm-backend: Update PV and SRCREV to align with upstream v1.2.5 release.

Update SRCREV/PV to include upstream fixes:
- correct the bpp value for float32 format
- fix the UBWC check condition when multiple modifiers are provided

Signed-off-by: Devanshi Bansal <devanshi@qti.qualcomm.com>

Author: Devanshi Bansal

recipes-graphics/msm-gbm-backend/msm-gbm-backend.bb

@@ -5,8 +5,8 @@ HOMEPAGE = "https://github.com/qualcomm-linux/gbm-msm-backend"
 LICENSE = "BSD-3-Clause-Clear"
 LIC_FILES_CHKSUM = "file://src/gbm_msm.h;md5=8c54773149e04ded5c0c3e293bb13509"
 
-PV = "0.1+git"
-SRCREV = "d2f771e8c80698a18b16f14ea60d5d55abede683"
+PV = "1.2.5"
+SRCREV = "e421a87ff0d4420cf6642958d5d11f09c66957c1"
 
 SRC_URI = "git://github.com/qualcomm-linux/gbm-msm-backend.git;protocol=https;branch=main \
            file://0002-QCOM-libgbm-use-sysconfdir-to-install-configuration-.patch \