util/docker/coreboot-sdk: Replace package qemu with qemu-system

The qemu package doesn't exist anymore or it was renamed. Instead of
installing QEMU for all available architectures, install only the
packages which ship architectures that are supported by coreboot.

  * qemu-system-arm
  * qemu-system-misc (for RISC-V)
  * qemu-system-ppc
  * qemu-system-x86

Change-Id: Ifc46a8c9fcb1ab3c38dc8cbbc906882e93a719d7
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66923
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tom Hiller <thrilleratplay@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/util/docker/coreboot-sdk/Dockerfile b/util/docker/coreboot-sdk/Dockerfile
index 55edf5d..6859ba1 100644
--- a/util/docker/coreboot-sdk/Dockerfile
+++ b/util/docker/coreboot-sdk/Dockerfile
@@ -68,7 +68,10 @@
 		pkg-config \
 		python2 \
 		python3 \
-		qemu \
+		qemu-system-arm \
+		qemu-system-misc \
+		qemu-system-ppc \
+		qemu-system-x86 \
 		rsync \
 		shellcheck \
 		subversion \