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/lib/debugfs/devfip.c b/lib/debugfs/devfip.c
index b0ee39a..d8b83b7 100644
--- a/lib/debugfs/devfip.c
+++ b/lib/debugfs/devfip.c
@@ -76,7 +76,8 @@
 	{"fw.cfg",		UUID_FW_CONFIG},
 	{"rot-k.crt",		UUID_ROT_KEY_CERT},
 	{"nt-k.crt",		UUID_NON_TRUSTED_WORLD_KEY_CERT},
-	{"sip-sp.crt",		UUID_SIP_SECURE_PARTITION_CONTENT_CERT}
+	{"sip-sp.crt",		UUID_SIP_SECURE_PARTITION_CONTENT_CERT},
+	{"plat-sp.crt",		UUID_PLAT_SECURE_PARTITION_CONTENT_CERT}
 };
 
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