MIPS: malta-time: remove unneeded semicolon

Eliminate the following coccicheck warning:
./arch/mips/mti-malta/malta-time.c:141:2-3: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>