drm/radeon/kms: fix typo in evergreen safe reg

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/reg_srcs/evergreen

@@ -439,7 +439,7 @@ evergreen 0x9400
 0x000286EC SPI_COMPUTE_NUM_THREAD_X
 0x000286F0 SPI_COMPUTE_NUM_THREAD_Y
 0x000286F4 SPI_COMPUTE_NUM_THREAD_Z
-0x000286F8 GDS_ADDR_SIZE
+0x00028724 GDS_ADDR_SIZE
 0x00028780 CB_BLEND0_CONTROL
 0x00028784 CB_BLEND1_CONTROL
 0x00028788 CB_BLEND2_CONTROL