mtd: spi-nor: unify read opcode variants with ST SPI FSM

serial_flash_cmds.h defines our opcodes a little differently. Let's
borrow its naming, since it's borrowed from the SFDP standard, and it's
more extensible.

This prepares us for merging serial_flash_cmds.h and spi-nor.h opcode
listing.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Huang Shijie <b32955@freescale.com>
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 1716f3c..d6f44d5 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1014,16 +1014,16 @@
 	/* Default commands */
 	switch (nor->flash_read) {
 	case SPI_NOR_QUAD:
-		nor->read_opcode = SPINOR_OP_QUAD_READ;
+		nor->read_opcode = SPINOR_OP_READ_1_1_4;
 		break;
 	case SPI_NOR_DUAL:
-		nor->read_opcode = SPINOR_OP_DUAL_READ;
+		nor->read_opcode = SPINOR_OP_READ_1_1_2;
 		break;
 	case SPI_NOR_FAST:
-		nor->read_opcode = SPINOR_OP_FAST_READ;
+		nor->read_opcode = SPINOR_OP_READ_FAST;
 		break;
 	case SPI_NOR_NORMAL:
-		nor->read_opcode = SPINOR_OP_NORM_READ;
+		nor->read_opcode = SPINOR_OP_READ;
 		break;
 	default:
 		dev_err(dev, "No Read opcode defined\n");
@@ -1041,16 +1041,16 @@
 			/* Dedicated 4-byte command set */
 			switch (nor->flash_read) {
 			case SPI_NOR_QUAD:
-				nor->read_opcode = SPINOR_OP_QUAD_READ_4B;
+				nor->read_opcode = SPINOR_OP_READ4_1_1_4;
 				break;
 			case SPI_NOR_DUAL:
-				nor->read_opcode = SPINOR_OP_DUAL_READ_4B;
+				nor->read_opcode = SPINOR_OP_READ4_1_1_2;
 				break;
 			case SPI_NOR_FAST:
-				nor->read_opcode = SPINOR_OP_FAST_READ_4B;
+				nor->read_opcode = SPINOR_OP_READ4_FAST;
 				break;
 			case SPI_NOR_NORMAL:
-				nor->read_opcode = SPINOR_OP_NORM_READ_4B;
+				nor->read_opcode = SPINOR_OP_READ4;
 				break;
 			}
 			nor->program_opcode = SPINOR_OP_PP_4B;