TEST: ARM: tegra: paz00: New ATAG function

Copied from fosser2 kernel tree

Change-Id: I1a40caa16632eca691ac6469c28c695b1bb3def0
Signed-off-by: zombah <zombah@gmail.com>
ANDROID: ARM: tegra: paz00: Enable lp0_vec in cmdline with values from u-boot

Change-Id: I6aca164bbedbb8707423be2caacb837ea9519369
Signed-off-by: zombah <zombah@gmail.com>