ARM: dts: omap3-gta04: remove unneeded unit names

This patch fixes the following DTC warnings for omap3-gta04a3.dtb,
omap3-gta04a4.dtb and omap3-gta04a5.dtb:

"dmtimer-pwm@11 has a unit name, but no reg property"
"connector@1 has a unit name, but no reg property"
"endpoint@0 has a unit name, but no reg property"

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>