init: Add additional logging levels

#include <cutils/klog.h>

#define ERROR(x...)   init_klog_write(KLOG_ERROR_LEVEL, x)

#define WARNING(x...) init_klog_write(KLOG_WARNING_LEVEL, x)

#define NOTICE(x...)  init_klog_write(KLOG_NOTICE_LEVEL, x)

#define INFO(x...)    init_klog_write(KLOG_INFO_LEVEL, x)

#define DEBUG(x...)   init_klog_write(KLOG_DEBUG_LEVEL, x)

#define VERBOSE(x...) init_klog_write(KLOG_DEBUG_LEVEL, x)

void init_klog_write(int level, const char* fmt, ...) __printflike(2, 3);

int selinux_klog_callback(int level, const char* fmt, ...) __printflike(2, 3);