ARM: OMAP2+: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: "Benoît Cousson" <bcousson@baylibre.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
[tony@atomide.com: updated against clkctrl and rt_idx changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>