arch/arm: fix the bug of armv8-r macro GET_MPIDR

should be core not cpu

Signed-off-by: fanjiangang <fanjiangang@lixiang.com>
Signed-off-by: chao an <anchao@lixiang.com>

Author: atmfjg

arch/arm/src/common/arm_internal.h

@@ -205,7 +205,7 @@ extern void arm_fullcontextrestore(uint32_t *restoreregs);
   ({ \
     uint64_t __mpidr = GET_MPIDR(); \
     __mpidr &= ~(MPIDR_AFFLVL_MASK << MPIDR_AFF ## aff_level ## _SHIFT); \
-    __mpidr |= (cpu << MPIDR_AFF ## aff_level ## _SHIFT); \
+    __mpidr |= (core << MPIDR_AFF ## aff_level ## _SHIFT); \
     __mpidr &= MPIDR_ID_MASK; \
     __mpidr; \
   })