configs: khadas-vim3_android{_ab}: move on bootmeth android

configs: khadas-vim3_android{_ab}: move on bootmeth android

Actually khadas vim3 use distro command to boot android image.
Move on new bootmeth android for A/B and non-A/B vim3 android.

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Link: https://lore.kernel.org/r/20241126-adnroidv2-v4-4-11636106dc69@baylibre.com
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>