dt-bindings: mtd: brcmnand: Updates for bcmbca SoCs

Update the descriptions to reflect different families of broadband SoC and
use the general name bcmbca for ARM based SoC.

Remove the requirement of interrupts property to reflect the driver
code and only require interrupt-names when interrupts property present.

Also add myself to the list of maintainers.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: David Regan <dregan@broadcom.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240223034758.13753-5-william.zhang@broadcom.com

Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml

@@ -9,6 +9,7 @@ title: Broadcom STB NAND Controller
 maintainers:
   - Brian Norris <computersforpeace@gmail.com>
   - Kamal Dasu <kdasu.kdev@gmail.com>
+  - William Zhang <william.zhang@broadcom.com>
 
 description: |
   The Broadcom Set-Top Box NAND controller supports low-level access to raw NAND
@@ -18,9 +19,10 @@ description: |
   supports basic PROGRAM and READ functions, among other features.
 
   This controller was originally designed for STB SoCs (BCM7xxx) but is now
-  available on a variety of Broadcom SoCs, including some BCM3xxx, BCM63xx, and
-  iProc/Cygnus. Its history includes several similar (but not fully register
-  compatible) versions.
+  available on a variety of Broadcom SoCs, including some BCM3xxx, MIPS based
+  Broadband SoC (BCM63xx), ARM based Broadband SoC (BCMBCA) and iProc/Cygnus.
+  Its history includes several similar (but not fully register compatible)
+  versions.
 
   -- Additional SoC-specific NAND controller properties --
 
@@ -53,7 +55,7 @@ properties:
               - brcm,brcmnand-v7.2
               - brcm,brcmnand-v7.3
           - const: brcm,brcmnand
-      - description: BCM63138 SoC-specific NAND controller
+      - description: BCMBCA SoC-specific NAND controller
         items:
           - const: brcm,nand-bcm63138
           - enum:
@@ -177,6 +179,8 @@ allOf:
             - const: iproc-idm
             - const: iproc-ext
   - if:
+      required:
+        - interrupts
       properties:
         interrupts:
           minItems: 2
@@ -189,7 +193,6 @@ unevaluatedProperties: false
 required:
   - reg
   - reg-names
-  - interrupts
 
 examples:
   - |