mips/bcm77xx: remove legacy __cpuinit sections that crept in

We removed __cpuinit support (leaving no-op stubs) quite some time ago.
However a few more crept in as of commit 6ee1d93455384cef8a0426effe85da2
("MIPS: BCM47XX: Detect more then 128 MiB of RAM (HIGHMEM)")

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

Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --cc arch/mips/bcm47xx/prom.c
Simple merge

diff --cc arch/mips/include/asm/pgtable-32.h
Simple merge

diff --cc arch/mips/mm/tlb-r4k.c
Simple merge