image: Add Kconfig options for FIT in the tools build

In preparation for enabling CONFIG_IS_ENABLED() on the host build, add
some options to enable the various FIT options expected in these tools.
This will ensure that the code builds correctly when CONFIG_TOOLS_xxx
is distinct from CONFIG_xxx.

Drop some #ifdefs which are immediately unnecessary (many more are in
later patches).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

tools/Kconfig

@@ -20,4 +20,29 @@ config TOOLS_LIBCRYPTO
 	  This selection does not affect target features, such as runtime FIT
 	  signature verification.
 
+config TOOLS_FIT
+	def_bool y
+	help
+	  Enable FIT support in the tools builds.
+
+config TOOLS_FIT_FULL_CHECK
+	def_bool y
+	help
+	  Do a full check of the FIT before using it in the tools builds
+
+config TOOLS_FIT_PRINT
+	def_bool y
+	help
+	  Print the content of the FIT verbosely in the tools builds
+
+config TOOLS_FIT_SIGNATURE
+	def_bool y
+	help
+	  Enable signature verification of FIT uImages in the tools builds
+
+config TOOLS_FIT_SIGNATURE_MAX_SIZE
+	hex
+	depends on TOOLS_FIT_SIGNATURE
+	default 0x10000000
+
 endmenu