3rdparty/chromeec: Update submodule to upstream master

Update from commit bcffec7fd - reef: Cleanup battery code
to commit 9fb10386a - Poppy: Configure camera PMIC to low power mode.

Brings in 794 new commits from Jan 2, 2017 to Jun 21, 2017

Change-Id: I864679360bd3b211b6883a662e20812b49aefbba
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

3rdparty/chromeec

@@ -1 +1 @@
-Subproject commit bcffec7fdc50e959cb298d094d8af472777dba75
+Subproject commit 9fb10386a720d270e37ce61da3ff3a6d5a69951e