[MIPS] __ucmpdi2 arguments are unsigned long long.

Reported by Eugene Surovegin <ebs@ebshome.net>.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/lib/ucmpdi2.c

@@ -2,7 +2,7 @@
 
 #include "libgcc.h"
 
-word_type __ucmpdi2 (unsigned long a, unsigned long b)
+word_type __ucmpdi2 (unsigned long long a, unsigned long long b)
 {
 	const DWunion au = {.ll = a};
 	const DWunion bu = {.ll = b};