[MIPS] Basic SPRAM support

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 89c3304..add717d 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -675,6 +675,12 @@
 		return;
 }
 
+#ifdef CONFIG_CPU_MIPSR2
+extern void spram_config(void);
+#else
+static inline void spram_config(void) {}
+#endif
+
 static inline void cpu_probe_mips(struct cpuinfo_mips *c)
 {
 	decode_configs(c);
@@ -712,6 +718,8 @@
 		c->cputype = CPU_74K;
 		break;
 	}
+
+	spram_config();
 }
 
 static inline void cpu_probe_alchemy(struct cpuinfo_mips *c)