Add common code for Atheros AR5312 and Atheros AR2315 SoCs families.
Signed-off-by: NSergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8237Signed-off-by: NRalf Baechle <ralf@linux-mips.org>