Add/Fix missing bit of R4600 hit cacheop workaround.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/c-r4k.c

@@ -481,6 +481,7 @@ static inline void local_r4k_flush_icache_range(void *args)
 		if (end - start > dcache_size) {
 			r4k_blast_dcache();
 		} else {
+			R4600_HIT_CACHEOP_WAR_IMPL;
 			addr = start & ~(dc_lsize - 1);
 			aend = (end - 1) & ~(dc_lsize - 1);
 

arch/mips/mm/pg-r4k.c

@@ -209,7 +209,7 @@ static inline void build_cdex_p(void)
 	}
 
 	if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
-		build_insn_word(0x8c200000);	/* lw      $zero, ($at) */
+		build_insn_word(0x3c01a000);	/* lui     $at, 0xa000  */
 
 	mi.c_format.opcode     = cache_op;
 	mi.c_format.rs         = 4;		/* $a0 */