tree c4f32bb7f978d928f4b906414f66ce23bbe41fc5
parent 0a8b153543f9c07e5e44d6650dd64e70265a08ab
author Michael Tritz <mtritz@us.ibm.com> 1503694027 -0500
committer Patrick Williams <patrick@stwcx.xyz> 1504038011 +0000

Enable environment variable deletion from obmc-flash-bmc-setenv@.service

This commit extends the functionality of obmc-flash-bmc-setenv@.service,
which calls upon the obmc-flash-bmc script to set an environment
variable.

When working with environment variables in the shell, one can set OR
clear a particular variable using the fw_setenv command. This commit
expands the functionality of the service file to match.

If a name-value pair is specified, this script will set the environment
variable as given. If a name is supplied with no value, the environment
variable with that name will be cleared.

Change-Id: I2eed0148957363668600986f56cb9e678caf855c
Signed-off-by: Michael Tritz <mtritz@us.ibm.com>