package/sscep: fix linking error

Apply the patch to fix the following build failure raised since the
addition of the package in commit
72fa60dc:

uclibc/sysroot/usr/lib/libc.a(getopt.os): in function `__GI_getopt':
getopt.c:(.text+0x598): multiple definition of `getopt'; src/getopt.o:getopt.c:(.text+0x0): first defined here

The patch has been submitted and accepted upstream to address this issue.

Fixes:
 - http://autobuild.buildroot.net/results/844c7dd79f69ef2ea8f293bb73a2d4b7533aa97c



Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
[yann.morin.1998@free.fr: do an actual bacport]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>