radeonsi: Don't allow DCC for encode in is_video_target_buffer_supported

This accidentally allowed DCC with format conversion, which is not supported.
Also disable EFC with VCN5 for now.

Fixes: 40c3a53fec ("radeonsi: Implement is_video_target_buffer_supported")
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30562>

src/gallium/drivers/radeonsi/si_get.c

@@ -1144,6 +1144,9 @@ static bool si_vid_is_target_buffer_supported(struct pipe_screen *screen,
       return !is_dcc && !is_format_conversion;
 
    case PIPE_VIDEO_ENTRYPOINT_ENCODE:
+      if (is_dcc)
+         return false;
+
       /* EFC */
       if (is_format_conversion) {
          const bool input_8bit =
@@ -1157,7 +1160,8 @@ static bool si_vid_is_target_buffer_supported(struct pipe_screen *screen,
             target->buffer_format == PIPE_FORMAT_R10G10B10A2_UNORM ||
             target->buffer_format == PIPE_FORMAT_R10G10B10X2_UNORM;
 
-         if (sscreen->info.family <= CHIP_RENOIR ||
+         if (sscreen->info.vcn_ip_version < VCN_2_0_0 ||
+             sscreen->info.vcn_ip_version >= VCN_5_0_0 ||
              sscreen->debug_flags & DBG(NO_EFC))
             return false;
 
@@ -1169,7 +1173,7 @@ static bool si_vid_is_target_buffer_supported(struct pipe_screen *screen,
             return false;
       }
 
-      return !is_dcc;
+      return true;
 
    default:
       return !is_format_conversion;