Rework i.MX6 UltraLite support to not use other i.MX6 code
The i.MX6 UltraLite is very different from the other i.MX6 SoCs and
the current BSP infrastructure needs to be reworked to allow for more
granullar control of the features each SoC provide to control the
changes to be applied for the SoC peripherals support.
For now, it is not possible to express this clearly in the BSP so the
current change is to revert some of the changes done for the i.MX6
UltraLite to be enabled and make sure that the boards using the SoC
does not inherit the 'mx6' override.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
