drm/amdkfd: Fix isa version for the GC 10.3.7

Correct the isa version for handling KFD test.

Fixes: 7c4f4f19 ("drm/amdkfd: Add GC 10.3.6 and 10.3.7 KFD definitions")
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>