buildsys: fix GNU make v3.80 compatibility again
buildsys: fix GNU make v3.80 compatibility again

GNU make 3.80 cannot handle "$(and)" or "$(or)" from commit 18e7136e
(buildsys: use kbuild style).  Replace them with ifeq/ifneq.

Signed-off-by: Kevin Cernekee <3105dbb3dd63fbb4f6371cfb04adc6726f76c56b@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

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