ARM: OMAP2: AM33XX: id: Add support for AM335x PG2.0

Add support for chip id recognition of AM335x PG2.0 silicon. By default
omap3xxx_check_revision() recognizes PG1.0, which is extended by adding
PG2.0 support

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
ARM: OMAP2: AM33XX: id: Add support for new AM335x PG2.1 Si

Add support for chip id detection of AM335x PG2.1 Silicon.

Currently omap3xxx_check_revision() detects PG1.0 and PG2.0,
so this patch extends it by adding PG2.1 Si support.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>