dt-bindings: mtd: ingenic: Change 'BCH' to 'ECC' in documentation

The JZ4740 ECC hardware is not BCH but Reed-Solomon, so it makes more
sense to use the more generic ECC term.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Documentation/devicetree/bindings/mtd/ingenic,jz4780-nand.txt

-* Ingenic JZ4780 NAND/BCH
+* Ingenic JZ4780 NAND/ECC
 
 This file documents the device tree bindings for NAND flash devices on the
 JZ4780. NAND devices are connected to the NEMC controller (described in
@@ -14,10 +14,10 @@ Required NAND controller device properties:
   an offset of 0 and a size of 0x1000000 (i.e. the whole NEMC bank).
 
 Optional NAND controller device properties:
-- ingenic,bch-controller: To make use of the hardware BCH controller, this
-  property must contain a phandle for the BCH controller node. The required
+- ingenic,bch-controller: To make use of the hardware ECC controller, this
+  property must contain a phandle for the ECC controller node. The required
   properties for this node are described below. If this is not specified,
-  software BCH will be used instead.
+  software ECC will be used instead.
 
 Optional children nodes:
 - Individual NAND chips are children of the NAND controller node.
@@ -70,17 +70,17 @@ nemc: nemc@13410000 {
 	};
 };
 
-The BCH controller is a separate SoC component used for error correction on
+The ECC controller is a separate SoC component used for error correction on
 NAND devices. The following is a description of the device properties for a
-BCH controller.
+ECC controller.
 
-Required BCH properties:
+Required ECC properties:
 - compatible: Should be one of:
   * ingenic,jz4740-ecc
   * ingenic,jz4725b-bch
   * ingenic,jz4780-bch
-- reg: Should specify the BCH controller registers location and length.
-- clocks: Clock for the BCH controller.
+- reg: Should specify the ECC controller registers location and length.
+- clocks: Clock for the ECC controller.
 
 Example: