arm: omap-common: Fix typo in CONFIG_OMAP54XX guard

Some initialization was unintentionally being skipped on omap5.

Fixes: f5af0827 ("arm: omap-common: Guard some parts of the code with CONFIG_OMAP44XX/OMAP54XX")
Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>