zlib: clean up some dead code

Cleanup unused `if 0'-ed functions, which have been dead since 2006
(commits 87c2ce3b9305 ("lib/zlib*: cleanups") by Adrian Bunk and
4f3865fb57a0 ("zlib_inflate: Upgrade library code to a recent version")
by Richard Purdie):

 - zlib_deflateSetDictionary
 - zlib_deflateParams
 - zlib_deflateCopy
 - zlib_inflateSync
 - zlib_syncsearch
 - zlib_inflateSetDictionary
 - zlib_inflatePrime

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm: ocmem: Check for NULL pointer from get_zone

The get_zone function might return NULL if it is
unable to find the zone for the associated client
id. Add check to prevent NULL pointer dereferencing.

Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm: ocmem: Add NULL pointer check for req structure

BUG_ON if req structure returned from handle_to_req
returns a NULL pointer.

Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
mmc: core: Optimize entering HS400 mode

In the current HS400 selection sequence high speed mode is entered
twice unnecessarily. Skip the first hs selection as it is also done
as part of entering high speed DDR mode.

Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>