zhuyanlin 9ea7676731 arch:xtensa: rename XCHAL_INT_NLEVELS to XCHAL_NUM_INTLEVELS
The name used in Tensilica support file core-isa.h for all vendors is
`XCHAL_NUM_INTLEVELS`.
Use a new name may be confused by newer porting xtensa arch.

Change-Id: Ie108d3fdfcc02c81f0eacfca852a1cfc9eea17de
2021-08-28 21:51:45 +02:00
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