UPSTREAM: kernel.h: define u8, s8, u32, etc. limits

(cherry pick from commit 89a0714106aac7309c7dfa0f004b39e1e89d2942)

Create constants that define the maximum and minimum values
representable by the kernel types u8, s8, u16, s16, and so on.

Change-Id: I5b3f021c30454e6a6f188c74910d5758ccccccc9
Signed-off-by: Alex Elder <elder@linaro.org>
Cc: Sage Weil <sage@inktank.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 27299111
Bug: 27297988
Git-commit: 89a0714106aac7309c7dfa0f004b39e1e89d2942
Git-repo: https://android.googlesource.com/kernel/common


[schikk@codeaurora.org fixed compilation errors]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>