dt-bindings: mmc: Remove comment on wakeup-source property

The current comment on wakeup-source is a little confusing because
the word deprecated can be interpreted at first glance to mean that
wakeup-source is deprecated. Also mentioning the obsolete property
confuses more than it helps. Therefore, the comment should be removed
completely because the enable-sdio-wakeup property is not used in
any current DTs. Also remove enable-sdio-wakeup reference in
wakeup-source.txt
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221130121033.7270-1-cniedermaier@dh-electronics.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/mmc-controller.yaml

@@ -293,7 +293,6 @@ properties:
     description:
       SDIO only. Preserves card power during a suspend/resume cycle.
 
-  # Deprecated: enable-sdio-wakeup
   wakeup-source:
     $ref: /schemas/types.yaml#/definitions/flag
     description:

Documentation/devicetree/bindings/power/wakeup-source.txt

@@ -17,15 +17,14 @@ interrupt.
 List of legacy properties and respective binding document
 ---------------------------------------------------------
 
-1. "enable-sdio-wakeup"		Documentation/devicetree/bindings/mmc/mmc.txt
-2. "gpio-key,wakeup"		Documentation/devicetree/bindings/input/gpio-keys{,-polled}.txt
-3. "has-tpo"			Documentation/devicetree/bindings/rtc/rtc-opal.txt
-4. "linux,wakeup"		Documentation/devicetree/bindings/input/gpio-matrix-keypad.txt
+1. "gpio-key,wakeup"		Documentation/devicetree/bindings/input/gpio-keys{,-polled}.txt
+2. "has-tpo"			Documentation/devicetree/bindings/rtc/rtc-opal.txt
+3. "linux,wakeup"		Documentation/devicetree/bindings/input/gpio-matrix-keypad.txt
 				Documentation/devicetree/bindings/mfd/tc3589x.txt
 				Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
-5. "linux,keypad-wakeup"	Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt
-6. "linux,input-wakeup"		Documentation/devicetree/bindings/input/samsung-keypad.txt
-7. "nvidia,wakeup-source"	Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt
+4. "linux,keypad-wakeup"	Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt
+5. "linux,input-wakeup"		Documentation/devicetree/bindings/input/samsung-keypad.txt
+6. "nvidia,wakeup-source"	Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt
 
 Examples
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