When Use Kaby Lake-g(AMD Vega M GPU) to do the Vulkan CTS test, the case "
dEQP-VK.texture.explicit_lod.2d.sizes.31x55_nearest_linear_mipmap_nearest_repeat" will fail

Following is the environtment

Platform	KabyLake-G
CPU	Intel (R) Core (TM) i7-8809G CPU @3.10GHz
GPU	AMD(Radeon RX Vega M GH Graphics);
Memory	16G
OS	Ubutu18.04.1
Kernel	4.19.0
Mesa: 	mesa 18.3.1 (https://mesa.freedesktop.org/archive/mesa-18.3.1.tar.gz) 

VK-GL-CTS version	https://github.com/KhronosGroup/VK-GL-CTS
commit 54e546a1a0a6fa412ea4c3e3081bbc9518928a6e

How to reproduce
./deqp-vk -n dEQP-VK.texture.explicit_lod
.2d.sizes.31x55_nearest_linear_mipmap_nearest_repeat
Writing test log into TestResults.qpa
dEQP Core git-54e546a1a0a6fa412ea4c3e3081bbc9518928a6e (0x54e546a1) starting..
  target implementation = 'Default'

Test case 'dEQP-VK.texture.explicit_lod.2d.sizes.31x55_nearest_linear_mipmap_nearest_repeat'..
  Fail (Verification failed)

DONE!

Test run totals:
  Passed:        0/1 (0.0%)
  Failed:        1/1 (100.0%)
  Not supported: 0/1 (0.0%)
  Warnings:      0/1 (0.0%)