Using following command to get GPU information for Andorid.
adb shell dumpsys | grep GLES
Then, outputs:
GLES: ARM, Mali-G68 MC4, OpenGL ES 3.2 v1.r32p1-01eac0.826828120ea50efae70981e7b5bf1827
This method has been tested on Qualcomm & MTK SOC.