APPLIED[F/Unstable]: [PATCH 1/1][SRU][B][D][E][F] UBUNTU: SAUCE: platform/x86: dell-uart-backlight: add retry for get scalar status

[Seth Forshee]

On Wed, Jan 08, 2020 at 03:59:45PM +0800, AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1858761
> 
> Found on new platforms that UART require more than 1 second to respond
> commands in the first 10 seconds after booted.
> dell_uart_get_scalar_status() is the first command we send to scalar and
> this command should be more reliable than other commands, and make sure
> we got correct response from scalar. So, add retry and increase the read
> timeout to 2 seconds.
> 
> Signed-off-by: AceLan Kao <acelan.kao at canonical.com>

Applied to focal/master-next and unstable/master, thanks!