shader: load bytes and halfwords from GPU-selected buffers

Co-authored-by: fxpw <fxpw@outlook.com>

src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp

@@ -3372,7 +3372,7 @@ private:
 				    !memory.SupportsIndirectBufferLoad(op)) {
 					Fail(flags.pc,
 					     "buffer descriptor is not a valid runtime value; GPU-selected access "
-					     "requires a scalar, raw DWORD x1/x2/x3/x4, or formatted X load");
+					     "requires a scalar, raw 8/16-bit, raw DWORD x1/x2/x3/x4, or formatted X load");
 				}
 				m_program.memory_info[flags.index].kind = ResourceKind::IndirectBuffer;
 				m_info.uses_dma                         = true;