sf: add struct spi_flash.sector_size parameter

This patch adds a new member to struct spi_flash (u16 sector_size)
and updates the spi flash drivers to start populating it.

This parameter can be used by spi flash commands that need to round
up units of operation to the flash's sector_size.

Having this number in one place also allows duplicated code to be
further collapsed into one common location (such as erase parameter
and the detected message).

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 792d04d..29bb88b 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -201,8 +201,7 @@
 
 int sst_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	return spi_flash_cmd_erase(flash, CMD_SST_SE, SST_SECTOR_SIZE,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_SST_SE, offset, len);
 }
 
 static int
@@ -256,11 +255,8 @@
 
 	stm->flash.write = sst_write;
 	stm->flash.erase = sst_erase;
-	stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, SST_SECTOR_SIZE);
-	print_size(stm->flash.size, "\n");
+	stm->flash.sector_size = SST_SECTOR_SIZE;
+	stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
 	/* Flash powers up read-only, so clear BP# bits */
 	sst_unlock(&stm->flash);