MIPS: R46000: Fix Micro-assembler field overflow for R4600 V2

Fix uasm warning, which triggered because of workaround for R4600 V2 CPUs.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6716/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/page.c

@@ -273,7 +273,7 @@ void build_clear_page(void)
 		uasm_i_ori(&buf, A2, A0, off);
 
 	if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
-		uasm_i_lui(&buf, AT, 0xa000);
+		uasm_i_lui(&buf, AT, uasm_rel_hi(0xa0000000));
 
 	off = cache_line_size ? min(8, pref_bias_clear_store / cache_line_size)
 				* cache_line_size : 0;
@@ -424,7 +424,7 @@ void build_copy_page(void)
 		uasm_i_ori(&buf, A2, A0, off);
 
 	if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
-		uasm_i_lui(&buf, AT, 0xa000);
+		uasm_i_lui(&buf, AT, uasm_rel_hi(0xa0000000));
 
 	off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
 				cache_line_size : 0;