spirv: add double support to _vtn_variable_load_store

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c
index e384536..3a5c23e 100644
--- a/src/compiler/spirv/vtn_variables.c
+++ b/src/compiler/spirv/vtn_variables.c
@@ -739,6 +739,7 @@
    case GLSL_TYPE_INT:
    case GLSL_TYPE_FLOAT:
    case GLSL_TYPE_BOOL:
+   case GLSL_TYPE_DOUBLE:
       /* At this point, we have a scalar, vector, or matrix so we know that
        * there cannot be any structure splitting still in the way.  By
        * stopping at the matrix level rather than the vector level, we