headers: Unbreak some ARM syscalls

Restore the outside-kernel exclusion for some syscalls that was
removed by change I959b64280e184655ef8c713aa79f9e23cb1f7df4,
since these syscalls are used elsewhere.

Change-Id: I5b5bf3d78edd137e820d25281a375966b6c009ec
getopt(): fix missing carriage return on bad parameters

This affect all command line tools which show the usage on stdout
after an invalid parameter error (printed on stderr)

Change-Id: I8e2cb3fda241ab989dc42055f15082f8b3ba1397
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
libc/arm: add cortex-a8 cpu variant

Change-Id: I30e8dd6d4b2e7889aea8f5ed21182a5941bfb489