Add mihawk platform to meta-ibm

The contents of this up-stream include the following items
1.Basic function
2.Led settings
3.GPIO monitor (id button and power supply)
4.Linux dts patch.

Change-Id: Id0d4fd06ed9a9d4abde6c2a68b0a709fde343f60
Signed-off-by: Ben Pai <Ben_Pai@wistron.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/mihawk/avsbus-enable.sh b/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/mihawk/avsbus-enable.sh
new file mode 100755
index 0000000..67acc73
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/mihawk/avsbus-enable.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+i2cset -y 4 0x70 0x00 0x00 b    # VDD 0  - PAGE set
+i2cset -y 4 0x70 0x01 0xB0 b    # VDD 0
+i2cset -y 4 0x70 0x00 0x01 b    # VCS 0  - PAGE set
+i2cset -y 4 0x70 0x01 0xB0 b    # VCS 0
+i2cset -y 4 0x70 0x00 0x00 b    # VCS 0  - PAGE reset
+i2cset -y 4 0x72 0x00 0x00 b    # VDN 0  - PAGE set
+i2cset -y 4 0x72 0x01 0xB0 b    # VDN 0
+i2cset -y 5 0x70 0x00 0x00 b    # VDD 1  - PAGE set
+i2cset -y 5 0x70 0x01 0xB0 b    # VDD 1
+i2cset -y 5 0x70 0x00 0x01 b    # VCS 1  - PAGE set
+i2cset -y 5 0x70 0x01 0xB0 b    # VCS 1
+i2cset -y 5 0x70 0x00 0x00 b    # VCS 1  - PAGE reset
+i2cset -y 5 0x72 0x00 0x00 b    # VDN 1  - PAGE set
+i2cset -y 5 0x72 0x01 0xB0 b    # VDN 1