tools: fix build without LIBCRYPTO support

Commit cb9faa6f98ae ("tools: Use a single target-independent config to
enable OpenSSL") introduced a target-independent configuration to build
crypto features in host tools.

But since commit 2c21256b27d7 ("hash: Use Kconfig to enable hashing in
host tools and SPL") the build without OpenSSL is broken, due to FIT
signature/encryption features. Add missing conditional compilation
tokens to fix this.

Signed-off-by: Paul-Erwan Rio <paulerwan.rio@gmail.com>
Tested-by: Alexander Dahl <ada@thorsis.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/mkimage.c b/tools/mkimage.c
index 6dfe3e1..ac62ebb 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -115,7 +115,7 @@
 		"          -B => align size in hex for FIT structure and header\n"
 		"          -b => append the device tree binary to the FIT\n"
 		"          -t => update the timestamp in the FIT\n");
-#ifdef CONFIG_FIT_SIGNATURE
+#if CONFIG_IS_ENABLED(FIT_SIGNATURE)
 	fprintf(stderr,
 		"Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
 		"          -k => set directory containing private keys\n"
@@ -130,8 +130,9 @@
 		"          -o => algorithm to use for signing\n");
 #else
 	fprintf(stderr,
-		"Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
+		"Signing / verified boot not supported (CONFIG_TOOLS_FIT_SIGNATURE undefined)\n");
 #endif
+
 	fprintf(stderr, "       %s -V ==> print version information and exit\n",
 		params.cmdname);
 	fprintf(stderr, "Use '-T list' to see a list of available image types\n");