LoongArch: Use _UL() and _ULL()

[ Upstream commit 3563b477 ]

Use _UL() and _ULL() that are provided by const.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>