powerpc/rtasd: Improve unknown error logging

Currently when we get an unknown RTAS event it prints the type as
"Unknown" and no other useful information. Add the raw type code to the
log message so that we have something to work off.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/rtasd.c

@@ -150,8 +150,10 @@ static void printk_log_rtas(char *buf, int len)
 	} else {
 		struct rtas_error_log *errlog = (struct rtas_error_log *)buf;
 
-		printk(RTAS_DEBUG "event: %d, Type: %s, Severity: %d\n",
-		       error_log_cnt, rtas_event_type(rtas_error_type(errlog)),
+		printk(RTAS_DEBUG "event: %d, Type: %s (%d), Severity: %d\n",
+		       error_log_cnt,
+		       rtas_event_type(rtas_error_type(errlog)),
+		       rtas_error_type(errlog),
 		       rtas_error_severity(errlog));
 	}
 }