Fix kconfig header lookup
Fix kconfig header lookup

kconfig header could not be found because we were giving
an incorrect path to copy_with_deps.

Change-Id: Ia51941f1451ee7b1c1c2f10ff6497256e521806b
Signed-off-by: Francois Berder <0eabc3e9da54407da074ac08d4217d54f5b94915@arm.com>

ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build,ARM-software/bob-build