Sliceup Kconfig; it's grown too large.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ddb5xxx/Kconfig b/arch/mips/ddb5xxx/Kconfig
new file mode 100644
index 0000000..e9b5de4
--- /dev/null
+++ b/arch/mips/ddb5xxx/Kconfig
@@ -0,0 +1,4 @@
+config DDB5477_BUS_FREQUENCY
+	int "bus frequency (in kHZ, 0 for auto-detect)"
+	depends on DDB5477
+	default 0