According to commit 400c1fa744 which
introduced rule A.5 to the coding guidelines, the initial exception list
was based on the non-standard function availability in minimal libc.
gmtime_r() however, has not been included to the list, although it's
present in minimal libc since 3e8df8b369.
This commit fixes this, by adding gmtime_r() to the rule A.5 exception
list.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
f250080af6