android: support boot header version 3 and 4

Safae Ouajihrequested to merge
souajih/v4_ti into integ/ti-u-boot-2021.01

This adds support for Android boot header version 3 and 4.

Signed-off-by: Safae Ouajih souajih@baylibre.com

Bug: TIAU-132

Series:

Edited by Mattijs Korpershoek

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