msm: sdio: Fix section mismatch

WARNING: vmlinux.o(.text+0x29918): Section mismatch in reference
from the function sdio_downloader_setup() to the function
.init.text:bootloader_debugfs_init()
The function sdio_downloader_setup() references
the function __init bootloader_debugfs_init().
This is often because sdio_downloader_setup lacks a __init
annotation or the annotation of bootloader_debugfs_init is wrong.

Just remove the __init marking from bootloader_debugfs_init()
since the call chain is long and nothing is marked __init in the
chain.

Change-Id: I4b29b45b3b60d9565fd70af27cf83814f3056a0c
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>