Some image 3D test cases does not work properly for embedded profile.

https://github.com/KhronosGroup/OpenCL-CTS/blob/6a64c5a0c74b9e4a83025628f2cdb746647cdfb1/test_conformance/images/samplerlessReads/test_read_3D.cpp#L250
https://github.com/KhronosGroup/OpenCL-CTS/blob/6a64c5a0c74b9e4a83025628f2cdb746647cdfb1/test_conformance/api/test_api_min_max.c#L806
According to the OpenCL Specification 1.2, the minimum value of CL_DEVICE_IMAGE3D_MAX_DEPTH can be 0 for Ebedded Profile.
For example, the code above cannot work properly when the Max Depth is less then 256.

Start with test_conformance/images/samplerlessReads/test_read_3D.cpp around line 250 and test_conformance/api/test_api_min_max.c around line 806. Review how both cases handle CL_DEVICE_IMAGE3D_MAX_DEPTH for the embedded profile, especially values below 256. Done means the relevant 3D image and min/max tests work when the reported maximum depth is less than 256.

Written by the indexing model from the issue text.