MLK-18156-2 mx6ullevk: Update board level codes
To align with v2020.04, add functions:
1. Support GPMI NAND
2. Support LCD splash screen
3. Add 9x9 EVK board support with LPDDR2 used
4. Update PMIC and LDO bypass for 9x9 EVK
5. Support two ethernet controllers
Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit
154d6c905a848eed3bcc1ae2e142da3508a61b92)
(cherry picked from commit
e7617471ab33579da972db82e042937233c857fa)
(cherry picked from commit
1df176a9b18d5e16e445307e6702822d9a8fa9f8)