[MIPS] TXx9: Fix txx9_pcode initialization

The txx9_pcode variable was introduced in commit
fe1c2bc64f65003b39f331a8e4b0d15b235a4afd ("TXx9: Add 64-bit support")
but was not initialized properly.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 0afe94c..fe6bee0 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -53,6 +53,7 @@
 		txx9_ce_res[i].name = txx9_ce_res_name[i];
 	}
 
+	txx9_pcode = pcode;
 	sprintf(txx9_pcode_str, "TX%x", pcode);
 	if (base) {
 		txx9_reg_res.start = base & 0xfffffffffULL;