MIPS: tlbex.c: Remove new instance of __cpuinitdata that crept back in

MIPS: tlbex.c: Remove new instance of __cpuinitdata that crept back in

We removed __cpuinit support (leaving no-op stubs) quite some time ago.
However a new instance was added in commit c5b367835cfc7a8ef53b9670a409ff
("MIPS: Add support for XPA.")

Since we want to clobber the stubs soon, get this removed now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9894/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>