meta-bletchley: bsp: convert patch to cfg file

convert current patch to .cfg file

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: I98ad0d5d69dd0c55ea40debd5b05ba4aa77be945
diff --git a/meta-facebook/meta-bletchley/recipes-bsp/u-boot/u-boot-aspeed-sdk/bletchley.cfg b/meta-facebook/meta-bletchley/recipes-bsp/u-boot/u-boot-aspeed-sdk/bletchley.cfg
new file mode 100644
index 0000000..cd6f2db
--- /dev/null
+++ b/meta-facebook/meta-bletchley/recipes-bsp/u-boot/u-boot-aspeed-sdk/bletchley.cfg
@@ -0,0 +1,3 @@
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyS4,57600n8 root=/dev/ram rw"
+CONFIG_BAUDRATE=57600