Fixes wrong MIN_MAP_BUFFER_ALIGNMENT limit
Fixes wrong MIN_MAP_BUFFER_ALIGNMENT limit

As per GL spec 4.6 P:632, Table 23.55,
It is given that MIN_MAP_BUFFER_ALIGNMENT should be aleast 64 or higher
Currently CTS test is limiting to 64 as maximum.

Affects:

KHR-GL46.limits.min_map_buffer_alignment
KHR-GL46.map_buffer_alignment.query
KHR-GL46.map_buffer_alignment.functional

Components: OpenGL

VK-GL-CTS issue: 1158

Change-Id: I6e4feea6e91bbf0e030b0dfcdbc49c716ffd8145

KhronosGroup/VK-GL-CTS,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/VK-GL-CTS,googlestadia/VK-GL-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/VK-GL-CTS