Add a C6X-specific ipc.h.
Add a C6X-specific ipc.h.

Signed-off-by: Bernd Schmidt <c931ab6ac2d0c45d944fa77d0e13e53c91dbbf4d@codesourcery.com>

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