Introduce the header arch/xtensa/include/asm/core.h that provides definitions for XCHAL macros missing in older xtensa releases. Use this header instead of variant/core.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
The last check-in to support the xt2000 development platform was missing some files. Signed-off-by: Chris Zankel <chris@zankel.net>