add bits/atomic.h for hppa
add bits/atomic.h for hppa

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

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