[MIPS] Fix build for PNX platforms.

Build error was caused by commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/nxp/pnx8550/stb810/board_setup.c b/arch/mips/nxp/pnx8550/stb810/board_setup.c
index 1282c27..af2a55e 100644
--- a/arch/mips/nxp/pnx8550/stb810/board_setup.c
+++ b/arch/mips/nxp/pnx8550/stb810/board_setup.c
@@ -33,15 +33,7 @@
 
 void __init board_setup(void)
 {
-	unsigned long config0, configpr;
-
-	config0 = read_c0_config();
-
-	/* clear all three cache coherency fields */
-	config0 &= ~(0x7 | (7<<25) | (7<<28));
-	config0 |= (CONF_CM_DEFAULT | (CONF_CM_DEFAULT<<25) |
-			(CONF_CM_DEFAULT<<28));
-	write_c0_config(config0);
+	unsigned long configpr;
 
 	configpr = read_c0_config7();
 	configpr |= (1<<19); /* enable tlb */