UG: Replace Freescale by FSL

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
UG: Update to the current version/release (dizzy/1.7)

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
UG: Use the right variable with version content

It was using one external file to keep only the variable with version name,
however it is already in conf.py file, so no need to duplicate this.

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
UG: Replace FSL Community BSP by project_name

* Include the variables.inc file
* Replace Freescale/FSL Community BSP by the variable project_name
* Fix some daisy/1.6 references using the respective variable

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>