dt-bindings: memory: lpddr3: deprecate manufacturer ID

The memory manufacturer should be described in vendor part of
compatible, so there is no need to duplicate it in a separate property.
Similarly is done in LPDDR2 bindings.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: NAlim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220206135807.211767-6-krzysztof.kozlowski@canonical.com

Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml

@@ -40,7 +40,9 @@ properties:
   manufacturer-id:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |
-      Manufacturer ID value read from Mode Register 5.
+      Manufacturer ID value read from Mode Register 5.  The property is
+      deprecated, manufacturer should be derived from the compatible.
+    deprecated: true
 
   revision-id:
     $ref: /schemas/types.yaml#/definitions/uint32-array