Enable the OMAP3 specific errata code for 454179, 430973, 621766
and while at it, remove legacy non-revision checked errata logic.
Signed-off-by: NNishanth Menon <nm@ti.com>
Tested-by: NMatt Porter <mporter@konsulko.com>
Reviewed-by: NTom Rini <trini@konsulko.com>