Documentation: dt-bindings: Fix interrupt documentation file path

Fix the incorrect interrupt documentation file path in binding docs.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Documentation/devicetree/bindings/gpio/snps-dwapb-gpio.txt

@@ -24,7 +24,7 @@ controller.
 - #interrupt-cells : Specifies the number of cells needed to encode an
   interrupt.  Shall be set to 2.  The first cell defines the interrupt number,
   the second encodes the triger flags encoded as described in
-  Documentation/devicetree/bindings/interrupts.txt
+  Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
 - interrupt-parent : The parent interrupt controller.
 - interrupts : The interrupt to the parent controller raised when GPIOs
   generate the interrupts.

Documentation/devicetree/bindings/mfd/arizona.txt

@@ -24,7 +24,7 @@ Required properties:
   - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
     The first cell is the IRQ number.
     The second cell is the flags, encoded as the trigger masks from
-    Documentation/devicetree/bindings/interrupts.txt
+    Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
 
   - gpio-controller : Indicates this device is a GPIO controller.
   - #gpio-cells : Must be 2. The first cell is the pin number and the

Documentation/devicetree/bindings/mfd/palmas.txt

@@ -24,7 +24,7 @@ and also the generic series names
 - #interrupt-cells : should be set to 2 for IRQ number and flags
   The first cell is the IRQ number.
   The second cell is the flags, encoded as the trigger masks from
-  Documentation/devicetree/bindings/interrupts.txt
+  Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
 - interrupt-parent : The parent interrupt controller.
 
 Optional properties:

Documentation/devicetree/bindings/sound/wm8994.txt

@@ -30,7 +30,7 @@ Optional properties:
   - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
     The first cell is the IRQ number.
     The second cell is the flags, encoded as the trigger masks from
-    Documentation/devicetree/bindings/interrupts.txt
+    Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
 
   - clocks : A list of up to two phandle and clock specifier pairs
   - clock-names : A list of clock names sorted in the same order as clocks.