drm/amdkfd: Enable userptr support when KFD is enabled

ROCm user mode depends on userptr support. Without it, KFD is basically
useless.

Make sure HSA_AMD selects the same options as DRM_AMDGPU_USERPTR to avoid
broken configurations where userptr gets enabled but its dependencies are
disabled.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/Kconfig

@@ -7,6 +7,8 @@ config HSA_AMD
 	bool "HSA kernel driver for AMD GPU devices"
 	depends on DRM_AMDGPU && (X86_64 || ARM64 || PPC64)
 	imply AMD_IOMMU_V2 if X86_64
+	select HMM_MIRROR
 	select MMU_NOTIFIER
+	select DRM_AMDGPU_USERPTR
 	help
 	  Enable this if you want to use HSA features on AMD GPU devices.