enable fcntl nocancel prototype for all threads
enable fcntl nocancel prototype for all threads

The cancel logic always uses this function even when !NPTL, so always
enable the prototype to avoid warnings.

Signed-off-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@gentoo.org>

brgl/uclibc-ng,brgl/uclibc-ng,ndmsystems/uClibc,ysat0/uClibc,ffainelli/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,hwoarang/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,hwoarang/uClibc,czankel/xtensa-uclibc,hjl-tools/uClibc,foss-xtensa/uClibc,mephi42/uClibc,waweber/uclibc-clang,foss-for-synopsys-dwc-arc-processors/uClibc,hjl-tools/uClibc,kraj/uclibc-ng,mephi42/uClibc,wbx-github/uclibc-ng,mephi42/uClibc,hwoarang/uClibc,ysat0/uClibc,m-labs/uclibc-lm32,atgreen/uClibc-moxie,waweber/uclibc-clang,kraj/uClibc,ddcc/klee-uclibc-0.9.33.2,kraj/uClibc,ddcc/klee-uclibc-0.9.33.2,skristiansson/uClibc-or1k,ndmsystems/uClibc,czankel/xtensa-uclibc,ndmsystems/uClibc,m-labs/uclibc-lm32,groundwater/uClibc,skristiansson/uClibc-or1k,waweber/uclibc-clang,ndmsystems/uClibc,ffainelli/uClibc,brgl/uclibc-ng,majek/uclibc-vx32,majek/uclibc-vx32,ffainelli/uClibc,kraj/uclibc-ng,wbx-github/uclibc-ng,kraj/uclibc-ng,brgl/uclibc-ng,ffainelli/uClibc,hjl-tools/uClibc,m-labs/uclibc-lm32,ffainelli/uClibc,groundwater/uClibc,ddcc/klee-uclibc-0.9.33.2,wbx-github/uclibc-ng,wbx-github/uclibc-ng,hjl-tools/uClibc,ddcc/klee-uclibc-0.9.33.2,foss-xtensa/uClibc,skristiansson/uClibc-or1k,mephi42/uClibc,foss-xtensa/uClibc,hwoarang/uClibc,czankel/xtensa-uclibc,groundwater/uClibc,majek/uclibc-vx32,atgreen/uClibc-moxie,hjl-tools/uClibc,atgreen/uClibc-moxie,ysat0/uClibc,ysat0/uClibc,skristiansson/uClibc-or1k,czankel/xtensa-uclibc,majek/uclibc-vx32,kraj/uclibc-ng,m-labs/uclibc-lm32,kraj/uClibc,groundwater/uClibc,kraj/uClibc,foss-xtensa/uClibc,groundwater/uClibc,atgreen/uClibc-moxie,foss-for-synopsys-dwc-arc-processors/uClibc,waweber/uclibc-clang