microblaze: Move cache function to cache.c

It is better to have init cache handling on one place.

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index 2a56bcc..5425f89 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -532,4 +532,9 @@
 			}
 		}
 	}
+	invalidate_dcache();
+	enable_dcache();
+
+	invalidate_icache();
+	enable_icache();
 }