[PATCH 6/7] spl: fit: add Kconfig option to specify key-hint for fit_generator

[Heiko Stuebner]

From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

The u-boot.itb can be generated either from a static .its that can
simply include the needed signature nodes with key-hints or from a
fit-generator script referenced in CONFIG_SPL_FIT_GENERATOR.

In the script-case it will need to know what key to include for the
key-hint and specified algorithm, so add an option for that key-name.

Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
---
 Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Kconfig b/Kconfig
index 15a783a67d..703762d740 100644
--- a/Kconfig
+++ b/Kconfig
@@ -534,6 +534,14 @@ config SPL_FIT_GENERATOR
 	  passed a list of supported device tree file stub names to
 	  include in the generated image.
 
+config SPL_FIT_GENERATOR_KEY_HINT
+	string "key hint for signing U-Boot FIT image"
+	depends on SPL_FIT_SIGNATURE
+	default "dev"
+	help
+	  The key hint to store in both the generated .its file as well as
+	  u-boot-key.dtb generated separately and embedded into the SPL.
+
 endif # SPL
 
 endif # FIT
-- 
2.24.1