hammerhead: update prebuilt kernel

6184a12 msm_serial_hs: check clk_state in set_mctrl() and fix unbalanced unvote
38eff67 msm_serial_hs: Vote for clocks during tty close
d854910 msm_serial_hs: Add ioctl support for UART Clock on/off request

Bug: 9971261
Change-Id: Ia766ebafbafe21f246e9d336fe7f468b07202885
diff --git a/vmlinux b/vmlinux
index d530dc2..ec7e72c 100644
--- a/vmlinux
+++ b/vmlinux
Binary files differ
diff --git a/zImage-dtb b/zImage-dtb
index a3db3c0..ce74082 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ