msm: memory: Fix section mismatch warning

WARNING: vmlinux.o(.text+0x16eb8): Section mismatch in reference
from the function alloc_bootmem_aligned() to the function
.init.text:__alloc_bootmem()
The function alloc_bootmem_aligned() references
the function __init __alloc_bootmem().
This is often because alloc_bootmem_aligned lacks a __init
annotation or the annotation of __alloc_bootmem is wrong.

Change-Id: Ib9786b5a9d405854c9f6df57b7711b5b03e6fcc9
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>