mosys: Add more system calls for firmwareupdate.

Several machines (elm, hana, scarlet, eve, ...) were failing
on chromeos-firmware update. With these system calls,
the command succeeds on hana.

TEST=built and ran on hana

Change-Id: Iab8c82a6c2f1fab0032b398db2f328815ab0c786
Reviewed-by: Jason Clinton <>
Tested-by: Samantha Miller <>
Tested-by: Raul E Rangel <>
Commit-Queue: Justin TerAvest <>
(cherry picked from commit 1842e66725eef3596a7dc16da71392e54981b7b9)
Reviewed-by: Aseda Aboagye <>
Reviewed-by: Samantha Miller <>
Commit-Queue: Aseda Aboagye <>
Tested-by: Aseda Aboagye <>
Trybot-Ready: Aseda Aboagye <>
2 files changed