community/binutils-cross-embedded: Fix AVR

- This drops a fix needed to work with community/gcc-avr
- It creates empty include folders in /usr/$target/include for each cross
  compilation target
    - This fixes compilation of testing/gcc-cross-embedded with AVR enabled
      (for some reason the compilation checks for existence of the include
       folder, even though no files are ever included.)
7 jobs for !13612 with binutils in 15 minutes and 23 seconds
latest detached
Status Job ID Name Coverage
  Lint
passed lint #318548
docker-alpine x86_64

00:00:18

 
  Build
passed build-aarch64 #318553
docker-alpine ci-build aarch64

00:09:46

passed build-armv7 #318554
docker-alpine ci-build armv7

00:09:45

passed build-ppc64le #318552
docker-alpine ci-build ppc64le

00:15:04

passed build-s390x #318551
docker-alpine ci-build s390x

00:06:36

passed build-x86 #318550
docker-alpine ci-build x86

00:06:07

passed build-x86_64 #318549
docker-alpine ci-build x86_64

00:04:56