i2c: omap: fix deprecated of_property_read_bool() use

Using of_property_read_bool() for non-boolean properties is deprecated
and results in a warning during runtime since commit c141ecc3 ("of:
Warn when of_property_read_bool() is used on non-boolean properties").

Fixes: b6ef830c ("i2c: omap: Add support for setting mux")
Cc: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.com>
Link: https://lore.kernel.org/r/20250415075230.16235-1-johan+linaro@kernel.org


Signed-off-by: Andi Shyti <andi.shyti@kernel.org>