Add compatible strings for the I2S IP blocks present on several Tegra
chips.  The primary objective here is to avoid checkpatch warnings,
per:

http://marc.info/?l=linux-tegra&m=142201349727836&w=2

Signed-off-by: Paul Walmsley <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Stephen Warren <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Alexandre Courbot <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
 .../bindings/sound/nvidia,tegra30-i2s.txt          |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt 
b/Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt
index 0c113ffe3814..f46566a09eeb 100644
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt
@@ -1,7 +1,10 @@
 NVIDIA Tegra30 I2S controller
 
 Required properties:
-- compatible : "nvidia,tegra30-i2s"
+- compatible : "nvidia,tegra30-i2s",
+  "nvidia,tegra114-i2s" (not yet matched by driver)
+  "nvidia,tegra124-i2s"
+  "nvidia,tegra132-i2s" (not yet matched by driver)
 - reg : Should contain I2S registers location and length
 - clocks : Must contain one entry, for the module clock.
   See ../clocks/clock-bindings.txt for details.


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