[PATCH v2 Resend 2/3] of/documentation: Update G2D documentation

Exynos5250 G2D IP requires only the gate clock. Update the
binding documentation accordingly.

Signed-off-by: Sachin Kamat <redacted>
Cc: Inki Dae <inki.dae@samsung.com>
---
Updated the description of clock-names as suggested by Tomasz Figa.
---
 .../devicetree/bindings/gpu/samsung-g2d.txt        |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpu/samsung-g2d.txt

b/Documentation/devicetree/bindings/gpu/samsung-g2d.txt index
3f454ff..c4f358d 100644

--- a/Documentation/devicetree/bindings/gpu/samsung-g2d.txt
+++ b/Documentation/devicetree/bindings/gpu/samsung-g2d.txt

@@ -11,8 +11,11 @@ Required properties:

   - interrupts : G2D interrupt number to the CPU.
   - clocks : from common clock binding: handle to G2D clocks.
-  - clock-names : from common clock binding: must contain "sclk_fimg2d" and
-		  "fimg2d", corresponding to entries in the clocks property.
+  - clock-names : names of clocks listed in clocks property, in the same
+		  order, depending on SoC type:
+		  - for S5PV210 and Exynos4 based SoCs: "fimg2d" and
+		    "sclk_fimg2d"
+		  - for Exynos5250 SoC: "fimg2d".