dt-bindings: mmc: Add full-pwr-cycle-in-suspend property

The commit 5a36d6bc ("mmc: core: Add DT-bindings for
MMC_CAP2_FULL_PWR_CYCLE") added the "full-pwr-cycle" property which
is possible to perform a full power cycle of the card at any time.

However, some environment (like r8a77951-salvator-xs) is possible
to perform a full power cycle of the card in suspend via firmware
(PSCI on arm-trusted-firmware). So, add a new property for such
environment.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1594123122-13156-2-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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

@@ -169,6 +169,11 @@ properties:
     description:
       Full power cycle of the card is supported.
 
+  full-pwr-cycle-in-suspend:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Full power cycle of the card in suspend is supported.
+
   mmc-ddr-1_2v:
     $ref: /schemas/types.yaml#/definitions/flag
     description: