mesa: rename is_in_uniform_block to is_in_buffer_block

Since this now checks if a variable is inside a uniform or a shader
storage block.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index b7a783c..3005b70 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1873,7 +1873,7 @@
           * locations assigned based on the declaration ordering and
           * sizes, array compaction would mess that up.
 	  */
-	 if (var->is_in_uniform_block() || var->type->contains_atomic())
+	 if (var->is_in_buffer_block() || var->type->contains_atomic())
 	    continue;
 
 	 unsigned int size = var->data.max_array_access;