This simply renames the previous documentation to something more generic and adds
updates according to last changes.

Signed-off-by: Romain Perier <redacted>
---
 .../devicetree/bindings/power/power-controller.txt     | 18 ++++++++++++++++++
 Documentation/devicetree/bindings/power/poweroff.txt   | 18 ------------------
 2 files changed, 18 insertions(+), 18 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/power/power-controller.txt
 delete mode 100644 Documentation/devicetree/bindings/power/poweroff.txt

diff --git a/Documentation/devicetree/bindings/power/power-controller.txt b/Documentation/devicetree/bindings/power/power-controller.txt
new file mode 100644
index 0000000..e0a1abe
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/power-controller.txt

@@ -0,0 +1,18 @@
+* Generic system power control capability
+
+Power-management integrated circuits or miscellaneous harware components are
+sometimes able to control the system power. The device driver associated to these
+components might needs to define this capability, which tells to the kernel
+how to switch off the system. The corresponding driver must have the standard
+property "system-power-controller" in its device node. This property marks the device as
+able to controller the system-power. In order to test if this property is found
+programmatically, use the helper function "of_is_system_power_controller" from
+of.h .
+
+Example:
+
+act8846: act8846@5 {
+	 compatible = "active-semi,act8846";
+	 status = "okay";
+	 system-power-controller;
+}