MT7621 has highmem. this was previously not working as the required symbol
was not selected in the Kconfig file.
Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14901/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
                select SYS_SUPPORTS_MULTITHREADING
                select SYS_SUPPORTS_SMP
                select SYS_SUPPORTS_MIPS_CPS
+               select SYS_SUPPORTS_HIGHMEM
                select MIPS_GIC
                select COMMON_CLK
                select CLKSRC_MIPS_GIC