build(tools): avoid unnecessary link

In their respective makefiles, cert_create, encrypt_fw and fiptool
depend on the --openssl phony target as a prerequisite. This forces
those tools to be re-linked each time.

Move the dependencies on the --openssl target from the tools to their
makefiles all targets, to avoid unnecessary linking while preserving the
OpenSSL version printing done in the --openssl targets when in debug.

Fixes: cf2dd17ddda2 ("refactor(security): add OpenSSL 1.x compatibility")
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Change-Id: I98a3ab30f36dffc253cecaaf3a57d2712522135d
diff --git a/tools/cert_create/Makefile b/tools/cert_create/Makefile
index 042e844..b911d19 100644
--- a/tools/cert_create/Makefile
+++ b/tools/cert_create/Makefile
@@ -85,9 +85,9 @@
 
 .PHONY: all clean realclean --openssl
 
-all: ${BINARY}
+all: --openssl ${BINARY}
 
-${BINARY}: --openssl ${OBJECTS} Makefile
+${BINARY}: ${OBJECTS} Makefile
 	@echo "  HOSTLD  $@"
 	@echo 'const char build_msg[] = "Built : "__TIME__", "__DATE__; \
                 const char platform_msg[] = "${PLAT_MSG}";' | \