arm: use PATH_MEM in ioperm()
arm: use PATH_MEM in ioperm()

Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

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