install: fix O= PREFIX= install
install: fix O= PREFIX= install

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

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