ARM: OMAP2+: Use of_property_read_bool() for boolean properties

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to to of_property_read_bool().

Signed-off-by: Rob Herring <robh@kernel.org>
Message-Id: <20230310144655.1540793-1-robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>