mtd: spi-nor: spansion: Remove status polling on volatile registers w…

…rite

Writing volatile registers are instant according to Cypress and do not
need any status polling. Remove status polling on volatile registers write.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>

drivers/mtd/spi-nor/spansion.c

@@ -57,10 +57,6 @@ static int cypress_nor_octal_dtr_en(struct spi_nor *nor)
 	if (ret)
 		return ret;
 
-	ret = spi_nor_wait_till_ready(nor);
-	if (ret)
-		return ret;
-
 	nor->read_dummy = 24;
 
 	/* Set the octal and DTR enable bits. */