mtd: cfi: introduce CFI_FLASH_BANKS

Replace CONFIG_SYS_MAX_FLASH_BANKS by CFI_FLASH_BANKS to prepare
Kconfig migration and avoid to redefine CONFIG_SYS_MAX_FLASH_BANKS
in cfi_flash.h.

After this patch CONFIG_SYS_MAX_FLASH_BANKS should be never used in
the cfi code: use CFI_MAX_FLASH_BANKS for struct size or CFI_FLASH_BANKS
for number of CFI banks which can be dynamic.

This patch modify all the files which include mtd/cfi_flash.h.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 9c27fea..71cefc1 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -191,7 +191,7 @@
 	int i;
 	flash_info_t *info;
 
-	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+	for (i = 0; i < CFI_FLASH_BANKS; i++) {
 		info = &flash_info[i];
 		if (info->size && info->start[0] <= base &&
 		    base <= info->start[0] + info->size - 1)
@@ -2419,7 +2419,7 @@
 #endif
 
 	/* Init: no FLASHes known */
-	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
+	for (i = 0; i < CFI_FLASH_BANKS; ++i) {
 		flash_info[i].flash_id = FLASH_UNKNOWN;
 
 		/* Optionally write flash configuration register */
diff --git a/drivers/mtd/cfi_mtd.c b/drivers/mtd/cfi_mtd.c
index 2295bb7..f998ffa 100644
--- a/drivers/mtd/cfi_mtd.c
+++ b/drivers/mtd/cfi_mtd.c
@@ -207,10 +207,10 @@
 	int error, i;
 #ifdef CONFIG_MTD_CONCAT
 	int devices_found = 0;
-	struct mtd_info *mtd_list[CONFIG_SYS_MAX_FLASH_BANKS];
+	struct mtd_info *mtd_list[CFI_FLASH_BANKS];
 #endif
 
-	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+	for (i = 0; i < CFI_FLASH_BANKS; i++) {
 		fi = &flash_info[i];
 		mtd = &cfi_mtd_info[i];
 
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 4388a08..6acaa84 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -3707,9 +3707,8 @@
 	int ret;
 	int cfi_mtd_nb = 0;
 
-#ifdef CONFIG_SYS_MAX_FLASH_BANKS
-	cfi_mtd_nb = CONFIG_SYS_MAX_FLASH_BANKS;
-#endif
+	if (IS_ENABLED(CONFIG_FLASH_CFI_MTD))
+		cfi_mtd_nb = CFI_FLASH_BANKS;
 
 	/* Reset SPI protocol for all commands. */
 	nor->reg_proto = SNOR_PROTO_1_1_1;