um: add missing declaration of 'getrlimit()' and friends
um: add missing declaration of 'getrlimit()' and friends

arch/um/os-Linux/start_up.c: In function 'check_coredump_limit':
arch/um/os-Linux/start_up.c:338:16: error: storage size of 'lim' isn't known
arch/um/os-Linux/start_up.c:339:2: error: implicit declaration of function 'getrlimit' [-Werror=implicit-function-declaration]

Signed-off-by: Sergei Trofimovich <110fdadc76b6bce16977f568bdb4723eaed6fb3f@gentoo.org>
CC: Jeff Dike <f9b6309e85863eba5d28138b6a0f35841ce976d0@addtoit.com>
CC: Richard Weinberger <320bca71fc381a4a025636043ca86e734e31cf8b@nod.at>
CC: Al Viro <de609eb4d5d70b1d38ec6642adbfc33a2781f63c@zeniv.linux.org.uk>
CC: 9ee9ce90578f3c5ba95eaaef5c1f7966953184e6@lists.sourceforge.net
CC: 26aa5d291712befd0a129abf77dc647f021043e2@lists.sourceforge.net
CC: 2578944098299abf708b08eff6fcf60565553586@vger.kernel.org
Signed-off-by: Richard Weinberger <320bca71fc381a4a025636043ca86e734e31cf8b@nod.at>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs