make: remove addition of PROJECT_PATH include path · phoenix-rtos/phoenix-rtos-kernel@feebb61

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initialization of 'void (*)(void *, oid_t *, const void *, void *)' {aka 'void (*)(void *, struct _oid_t *, const void *, void *)'} from incompatible pointer type 'int (*)(void *, oid_t *, const void *, void *)' {aka 'int (*)(void *, struct _oid_t *, const void *, void *)'} [-Wincompatible-pointer-types]