Using vfree instead of kfree because we using vzalloc to allocate memory
and aff cleanup deferred io

Update in the background instead of on demand to prevent blocking for
long periods of time.

Add bitrev8 to ws_eink_display for issue mirror with littlevgl graphic lib.

Fix a problem where the OpenWeatherMap ambient temperature service would
try to advertise the service each time a data connection was
established. This caused a crash the second time the connection was
established.

Remove the bme680 kernel driver initialization code from the mangOH
yellow module because the Bosch userspace driver is now being used
instead.

Use "full update" rather than "partial update" LUT every 10th update to
the display to help prevent "ghosting" display artifacts from
accumulating.

The BSEC temperature offset and ambient temperature required by the
bme680 driver library are now supplied dynamically. Additionally, an
openweathermap.org based ambient temperature API was added. This is of
course only useful if the device will be outdoors.

Add callinng init in ws_eink_display and sleep after displaying

The temperatures being read back are higher than expected.  Add some
logs until the issue is resolved.

Use the bme680 driver library provided by Bosch and package it as a
Legato component. This provides a more complete driver implementation
than the kernel module that was being used previously. Also integrate
the proprietary BSEC library from Bosch to get more intelligence out of
the sensor.

Add fb_ioctl to framebuffer ops help to control deepsleep mode
for waveshare eink display from user space.
In user space can use ioctl(myfd, command,.) to set sleep mode or wakeup

Update the driver to indicate that only the 2.13" display is supported
since this is the only display we have tested.

Store a pointer to the device properties struct in the device data
rather than setting module scoped variables in the probe. The benefit of
this is that the driver could conceivably be used to support two
displays with different display properties simultaneously.

Set the max SPI speed to 4MHz, remove the corresponding TODO entry and
also a TODO relating to previously completed endian changes.

Not merging the branch HEAD because the final commit is not required.

Call pcf85063_set_clkout_freq() rather than manually writing the
control_2 register in the probe function.