dt-bindings: exynos5433-decon: fix interrupts bindings

DECON requires different interrupts depending on mode of work, which
depends on panel it is connected to.
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt

@@ -8,12 +8,12 @@ Required properties:
 - compatible: value should be one of:
 	"samsung,exynos5433-decon", "samsung,exynos5433-decon-tv";
 - reg: physical base address and length of the DECON registers set.
-- interrupts: should contain a list of all DECON IP block interrupts in the
-	      order: VSYNC, LCD_SYSTEM. The interrupt specifier format
-	      depends on the interrupt controller used.
-- interrupt-names: should contain the interrupt names: "vsync", "lcd_sys"
-		   in the same order as they were listed in the interrupts
-		   property.
+- interrupt-names: should contain the interrupt names depending on mode of work:
+		video mode: "vsync",
+		command mode: "lcd_sys".
+- interrupts or interrupts-extended: list of interrupt specifiers corresponding
+		to names privided in interrupt-names, as described in
+		interrupt-controller/interrupts.txt
 - clocks: must include clock specifiers corresponding to entries in the
 	  clock-names property.
 - clock-names: list of clock names sorted in the same order as the clocks