SDK: update SDK to API 15

Change-Id: Ie6eecb86c441ef71a0677884be4c9fdfcd2737de
diff --git a/sdk/usbdriver_source.properties b/sdk/usbdriver_source.properties
index 3f9484b..c55310e 100755
--- a/sdk/usbdriver_source.properties
+++ b/sdk/usbdriver_source.properties
@@ -1,4 +1,4 @@
-Pkg.Revision=4

+Pkg.Revision=5

 Archive.Os=WINDOWS

 Archive.Arch=ANY

 Extra.Path=usb_driver