panfrost: Add R10G10B10A2_SSCALED vertex format

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
diff --git a/src/gallium/drivers/panfrost/pan_format.c b/src/gallium/drivers/panfrost/pan_format.c
index 7c94596..f272e3a 100644
--- a/src/gallium/drivers/panfrost/pan_format.c
+++ b/src/gallium/drivers/panfrost/pan_format.c
@@ -176,6 +176,10 @@
         case PIPE_FORMAT_B10G10R10A2_UINT:
                 return MALI_RGB10_A2UI;
 
+        case PIPE_FORMAT_R10G10B10A2_SSCALED:
+        case PIPE_FORMAT_B10G10R10A2_SSCALED:
+                return MALI_RGB10_A2I;
+
         case PIPE_FORMAT_Z32_UNORM:
         case PIPE_FORMAT_Z24X8_UNORM:
                 return MALI_Z32_UNORM;