cert_create: add Platform owned secure partitions support

Add support to generate a certificate named "plat-sp-cert" for Secure
Partitions(SP) owned by Platform.
Earlier a single certificate file "sip-sp-cert" was generated which
contained hash of all 8 SPs, with this change SPs are divided into
two categories viz "SiP owned" and "Plat owned" containing 4 SPs each.

Platform RoT key pair is used for signing.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I5bd493cfce4cf3fc14b87c8ed1045f633d0c92b6
diff --git a/tools/fiptool/tbbr_config.c b/tools/fiptool/tbbr_config.c
index bf721c1..c1e5217 100644
--- a/tools/fiptool/tbbr_config.c
+++ b/tools/fiptool/tbbr_config.c
@@ -162,6 +162,11 @@
 		.cmdline_name = "sip-sp-cert"
 	},
 	{
+		.name = "Platform owned Secure Partition content certificate",
+		.uuid = UUID_PLAT_SECURE_PARTITION_CONTENT_CERT,
+		.cmdline_name = "plat-sp-cert"
+	},
+	{
 		.name = NULL,
 		.uuid = { {0} },
 		.cmdline_name = NULL,