android: r600: fix libmesa_amd_common dependency

android: r600: fix libmesa_amd_common dependency

Adding libmesa_amd_common dependency and exporting its headers,
avoids the following building error:

external/mesa/src/gallium/drivers/r600/evergreen_compute.c:29:10: fatal error: 'ac_binary.h' file not found
         ^
1 error generated.

Fixes: 3bbbb63 "automake: r600: radeonsi: correctly manage libamd_common.la linking"
Fixes: 503fb13 "radeon/ac: switch to ac_shader_binary_config_start()"
v2 [Emil Velikov: drop unneeded LOCAL_EXPORT_C_INCLUDE_DIRS]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>