drm/amdgpu: Use apt name for FW reserved region

commit db3b5cb6

 upstream

Use the generic term fw_reserved_memory for FW reserve region. This
region may also hold discovery TMR in addition to other reserve
regions. This region size could be larger than discovery tmr size, hence
don't change the discovery tmr size based on this.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ This change fixes reading IP discovery from debugfs.
  It needed to be hand modified because:
  * GC 9.4.3 support isn't introduced in older kernels until
    228ce176 ("drm/amdgpu: Handle VRAM dependencies on GFXIP9.4.3")
  * It also changed because of 58ab2c08

 (drm/amdgpu: use VRAM|GTT
    for a bunch of kernel allocations) not being present.
  Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2748 ]
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>