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 17 minutes and 28 seconds
latest detached
Status Job ID Name Coverage
  Lint
passed #228287
x86_64 docker-alpine
lint

00:00:26

 
  Build
passed #228292
aarch64 ci-build docker-alpine
build-aarch64

00:08:40

passed #228293
armv7 ci-build docker-alpine
build-armv7

00:12:04

passed #228291
ppc64le ci-build docker-alpine
build-ppc64le

00:16:29

passed #228290
s390x ci-build docker-alpine
build-s390x

00:05:37

passed #228289
x86 ci-build docker-alpine
build-x86

00:06:29

passed #228288
x86_64 ci-build docker-alpine
build-x86_64

00:05:13