Don't align 2D image buffer size
Don't align 2D image buffer size

Cuda allows creating 2D textures from memory with unaligned size.
Aligning it will cause us to overshoot the size of the underlying
allocation.

Change-Id: Ia20dec2105e36ca4a8448c9c6299d0001b388d25

ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP