[PATCH v2 6/8] mmc: sdhci-esdhc-imx: using specific compatible string in binding doc

[b29396@freescale.com (Dong Aisheng)]

Using specific compatible string in binding doc to make the binding
more clear.
It's also used to avoid checkpatch warning in the future like follows:
0005-mmc-sdhci-do-not-enable-card-cd-wakeup-for-gpio-case.patch has no obvious style problems and is ready for submission.
WARNING: DT compatible string "fsl,imx6sx-usdhc" appears un-documented -- check ./Documentation/devicetree/bindings/
+       { .compatible = "fsl,imx6sx-usdhc", .data = &usdhc_imx6sx_data, },

total: 0 errors, 1 warnings, 18 lines checked

Signed-off-by: Dong Aisheng <b29396@freescale.com>
---
 .../devicetree/bindings/mmc/fsl-imx-esdhc.txt      |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
index 9046ba06..c415d34 100644
--- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
+++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
@@ -7,7 +7,14 @@ This file documents differences between the core properties described
 by mmc.txt and the properties used by the sdhci-esdhc-imx driver.
 
 Required properties:
-- compatible : Should be "fsl,<chip>-esdhc"
+- compatible : Should be "fsl,<chip>-esdhc", the supported chips include
+	       "fsl,imx25-esdhc"
+	       "fsl,imx35-esdhc"
+	       "fsl,imx51-esdhc"
+	       "fsl,imx53-esdhc"
+	       "fsl,imx6q-usdhc"
+	       "fsl,imx6sl-usdhc"
+	       "fsl,imx6sx-usdhc"
 
 Optional properties:
 - fsl,cd-controller : Indicate to use controller internal card detection
-- 
1.7.8