[MIPS] vr41xx: Replace magic number for P4K bit with symbol.

Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/mm/c-r4k.c

@@ -862,7 +862,7 @@ static void __init probe_pcache(void)
 		break;
 
 	case CPU_VR4133:
-		write_c0_config(config & ~CONF_EB);
+		write_c0_config(config & ~VR41_CONF_P4K);
 	case CPU_VR4131:
 		/* Workaround for cache instruction bug of VR4131 */
 		if (c->processor_id == 0x0c80U || c->processor_id == 0x0c81U ||

include/asm-mips/mipsregs.h

@@ -470,6 +470,7 @@
 
 /* Bits specific to the VR41xx.  */
 #define VR41_CONF_CS		(_ULCAST_(1) << 12)
+#define VR41_CONF_P4K		(_ULCAST_(1) << 13)
 #define VR41_CONF_BP		(_ULCAST_(1) << 16)
 #define VR41_CONF_M16		(_ULCAST_(1) << 20)
 #define VR41_CONF_AD		(_ULCAST_(1) << 23)