drm/xe: vram addr range is expanded to bit[17:8]

The bit field used to be [14:8] with [17:15] marked as SPARE and
defaulted to 0. So, simply expand the read to bit[17:8] assuming
the platforms using only bit[14:8] have zeros in the expanded bits.

BSpec: 54991

Signed-off-by: Fei Yang <fei.yang@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260112220330.2267122-2-fei.yang@intel.com

Author: fei-yang

drivers/gpu/drm/xe/xe_vram.c

@@ -155,7 +155,7 @@ static int tile_vram_size(struct xe_tile *tile, u64 *vram_size,
 		*tile_offset = 0;
 	} else {
 		reg = xe_mmio_read32(&tile->mmio, SG_TILE_ADDR_RANGE(tile->id));
-		*tile_size = (u64)REG_FIELD_GET(GENMASK(14, 8), reg) * SZ_1G;
+		*tile_size = (u64)REG_FIELD_GET(GENMASK(17, 8), reg) * SZ_1G;
 		*tile_offset = (u64)REG_FIELD_GET(GENMASK(7, 1), reg) * SZ_1G;
 	}