/usr/portage/net-wireless/hostap/files/digest-hostap-0.0.2 and digest-hostap-0.0.2-r1 should contain digests for the extra pcmcia-cs sources. These are included in hostap-0.0.1 which builds fine, but an emerge for 0.0.2 bails out with an error reporting the missing digests.
The same applies to hostap-0.0.3-r1.
I am guilty and I fixed it now. Thanks for the hint.