fix(rcar): fix implicit rule invocations in tools

The `rzg_layout_create` and `rcar_layout_create` tools have a rule to
build object files from C files, but it depends on object files in the
parent directory when it should depend on object files in the current
directory. Consequently, the rule is not triggering and the implicit C
compilation rule is executed instead. This rule works, so I have
replaced the broken rule with exactly the same command as what the
implicit rule is executing and fixed the dependency.

Change-Id: Ib8d640361adff8c4d660738dda230e5536bec629
Signed-off-by: Chris Kay <chris.kay@arm.com>
2 files changed