arm: dts: am33xx.dtsi: Add node name to rtc device node
arm: dts: am33xx.dtsi: Add node name to rtc device node

Making it possible to reference and therefor change (disable) this
device node from other dts file which import this dtsi file.

Signed-off-by: Stefan Roese <44b7497c4bb5f3e8c071b12b7ece82766a88068d@denx.de>
Cc: Lukas Stockmann <4e8d7ea831d94f197fe185b2655b0b06c3507e4c@siemens.com>
Cc: Benoit Cousson <8341a8614128d333cb43eedf99ddd6472c68ff67@baylibre.com>
Signed-off-by: Tony Lindgren <1001e8702733cced254345e193c88aaa47a4f5de@atomide.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs