fix stubs
fix stubs

We use enosys_stub only in this file so make it static

Signed-off-by: Peter S. Mazinger <1f4071d9f342c1637b13af9bc258f2ff72e96758@gmx.net>

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