MIPS: Change type of asid_cache to unsigned long

asid_cache must be unsigned long otherwise on 64 bit systems it will
become 0 if the value in get_new_mmu_context() reaches 0xffffffff and
in the end the assumption of ASID_FIRST_VERSION is not true anymore
thus leads to more dangerous things.

Initial patch by Yong Zhang <yong.zhang@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: libin <huawei.libin@huawei.com>

arch/mips/include/asm/cpu-info.h

@@ -39,14 +39,14 @@ struct cache_desc {
 #define MIPS_CACHE_PINDEX	0x00000020	/* Physically indexed cache */
 
 struct cpuinfo_mips {
-	unsigned int		udelay_val;
-	unsigned int		asid_cache;
+	unsigned long		asid_cache;
 
 	/*
 	 * Capability and feature descriptor structure for MIPS CPU
 	 */
 	unsigned long		options;
 	unsigned long		ases;
+	unsigned int		udelay_val;
 	unsigned int		processor_id;
 	unsigned int		fpu_id;
 	unsigned int		msa_id;