gfxstream: look for common/opengl headers

Probably "Make GL header lib and update libs to explicitly
depend on it" broke the meson build.

In file included from ../renderControl_enc/renderControl_types.h:19,
                 from ../renderControl_enc/renderControl_client_proc.h:8,
                 from ../renderControl_enc/renderControl_client_context.h:6,
                 from ../renderControl_enc/renderControl_enc.h:9,
                 from ../vulkan_enc/../OpenglSystemCommon/HostConnection.h:25,
                 from ../vulkan_enc/ResourceTracker.cpp:19:
../OpenglCodecCommon/glUtils.h:46:10: fatal error: GLES/gl.h: No such file or directory

Long term, we should nuke renderControl and GL dependencies through
compile options (GOLDFISH_NO_GL) for example.

BUG=311486792
TEST=meson amd64-build/
     ninja -C amd64-build

Change-Id: Ifebac059e51d527423e66f7e3ba6e7a73b8bcfa3
diff --git a/guest/OpenglSystemCommon/meson.build b/guest/OpenglSystemCommon/meson.build
index 6299787..751464a 100644
--- a/guest/OpenglSystemCommon/meson.build
+++ b/guest/OpenglSystemCommon/meson.build
@@ -13,7 +13,8 @@
    'stream',
    files_lib_stream,
    cpp_args: cpp_args,
-   include_directories: [inc_vulkan_headers, inc_guest_iostream, inc_opengl_codec,
+   include_directories: [inc_vulkan_headers, inc_opengl_headers,
+                         inc_guest_iostream, inc_opengl_codec,
                          inc_android_emu, inc_render_enc, inc_android_compat,
                          inc_qemu_pipe, inc_qemu_pipe_types, inc_gralloc,
                          inc_vulkan_enc, inc_goldfish_address_space,