hammerhead: update prebuilt kernel

6bb7e94 usb: dwc3-msm: use only vbus to determine device mode
diff --git a/vmlinux b/vmlinux
index e105e6a..184fb9d 100644
--- a/vmlinux
+++ b/vmlinux
Binary files differ
diff --git a/zImage-dtb b/zImage-dtb
index 75727d2..f84f137 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ