mtd: spi-nor: issi: unify function names

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220223134358.1914798-10-michael@walle.cc

drivers/mtd/spi-nor/issi.c

@@ -29,7 +29,7 @@ static const struct spi_nor_fixups is25lp256_fixups = {
 	.post_bfpt = is25lp256_post_bfpt_fixups,
 };
 
-static const struct flash_info issi_parts[] = {
+static const struct flash_info issi_nor_parts[] = {
 	/* ISSI */
 	{ "is25cd512",  INFO(0x7f9d20, 0, 32 * 1024,   2)
 		NO_SFDP_FLAGS(SECT_4K) },
@@ -69,18 +69,18 @@ static const struct flash_info issi_parts[] = {
 		NO_SFDP_FLAGS(SECT_4K) },
 };
 
-static void issi_default_init(struct spi_nor *nor)
+static void issi_nor_default_init(struct spi_nor *nor)
 {
 	nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
 }
 
 static const struct spi_nor_fixups issi_fixups = {
-	.default_init = issi_default_init,
+	.default_init = issi_nor_default_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_issi = {
 	.name = "issi",
-	.parts = issi_parts,
-	.nparts = ARRAY_SIZE(issi_parts),
+	.parts = issi_nor_parts,
+	.nparts = ARRAY_SIZE(issi_nor_parts),
 	.fixups = &issi_fixups,
 };