dt-bindings: bcm4329-fmac: add optional brcm,ccode-map

Add optional brcm,ccode-map property to support translation from ISO3166
country code to brcmfmac firmware country code and revision.

The country revision is needed because the RF parameters that provide
regulatory compliance are tweaked per platform/customer.  So depending
on the RF path tight to the chip, certain country revision needs to be
specified.  As such they could be seen as device specific calibration
data which is a good fit into device tree.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://lore.kernel.org/r/20210415104728.8471-2-shawn.guo@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/net/wireless/brcm,bcm4329-fmac.yaml

@@ -68,6 +68,13 @@ properties:
     description: A GPIO line connected to the WL_RST line, if present
       this shall be flagged as active low.
 
+  brcm,ccode-map:
+    $ref: /schemas/types.yaml#/definitions/string-array
+    description: Multiple strings for translating ISO3166 country code to
+      brcmfmac firmware country code and revision.
+    items:
+      pattern: '^[A-Z][A-Z]-[A-Z][0-9A-Z]-[0-9]+$'
+
 required:
   - compatible
   - reg
@@ -97,5 +104,6 @@ examples:
         interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
         interrupt-names = "host-wake";
         reset-gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+        brcm,ccode-map = "JP-JP-78", "US-Q2-86";
       };
     };