Add FASTBOOT_FLASH_NAND_TRIMFFS to Kconfig; note there are no in-tree
users of it.

Signed-off-by: Alex Kiernan <alex.kier...@gmail.com>
---

Changes in v5:
- new

Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/fastboot/Kconfig     | 6 ++++++
 scripts/config_whitelist.txt | 1 -
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/fastboot/Kconfig b/drivers/fastboot/Kconfig
index 51c5789..b38f302 100644
--- a/drivers/fastboot/Kconfig
+++ b/drivers/fastboot/Kconfig
@@ -95,6 +95,12 @@ config FASTBOOT_FLASH_NAND_DEV
          regarding the non-volatile storage device. Define this to
          the NAND device that fastboot should use to store the image.
 
+config FASTBOOT_FLASH_NAND_TRIMFFS
+       bool "Skip empty pages when flashing NAND"
+       depends on FASTBOOT_FLASH_NAND
+       help
+         When flashing NAND enable DROP_FFS to drop trailing all-0xff pages.
+
 config FASTBOOT_GPT_NAME
        string "Target name for updating GPT"
        depends on FASTBOOT_FLASH_MMC && EFI_PARTITION
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 71df6db..347c619 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -591,7 +591,6 @@ CONFIG_EXYNOS_SPL
 CONFIG_EXYNOS_TMU
 CONFIG_FACTORYSET
 CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE
-CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS
 CONFIG_FAST_FLASH_BIT
 CONFIG_FB_ADDR
 CONFIG_FB_BACKLIGHT
-- 
2.7.4

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