rtc: omap: drop vendor-prefix from power-controller dt property

Drop the vendor-prefix from the "ti,system-power-controller" device-tree
property name.

It has been agreed to make "system-power-controller" a standard property
and to drop the vendor-prefix that is currently used by several drivers.

Note that drivers that have used "<vendor>,system-power-controller" in a
released kernel will need to support both versions.

Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benot Cousson <bcousson@baylibre.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/devicetree/bindings/rtc/rtc-omap.txt

@@ -13,7 +13,7 @@ Required properties:
 - interrupt-parent: phandle for the interrupt controller
 
 Optional properties:
-- ti,system-power-controller: whether the rtc is controlling the system power
+- system-power-controller: whether the rtc is controlling the system power
   through pmic_power_en
 
 Example:
@@ -24,5 +24,5 @@ rtc@1c23000 {
 	interrupts = <19
 		      19>;
 	interrupt-parent = <&intc>;
-	ti,system-power-controller;
+	system-power-controller;
 };