community/ccid: add support for the GemPC Twin in serial mode

Serial support is needed for some card readers (e.g. the one on the
Librem 5)
7 jobs for !18774 with ccid in 1 minute and 53 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed #333249
docker-alpine x86_64
lint

00:00:18

 
  Build
passed #333254
docker-alpine ci-build aarch64
build-aarch64

00:00:26

passed #333255
docker-alpine ci-build armv7
build-armv7

00:01:32

passed #333253
docker-alpine ci-build ppc64le
build-ppc64le

00:00:35

passed #333252
docker-alpine ci-build s390x
build-s390x

00:00:40

passed #333251
docker-alpine ci-build x86
build-x86

00:00:14

passed #333250
docker-alpine ci-build x86_64
build-x86_64

00:00:40