ci: Enable CodeQL checking #174

Job	Run time
buildroot (qemu_x86_defconfig, glibc)	1m 44s
buildroot (qemu_x86_defconfig, uclibc)	1m 40s
buildroot (qemu_x86_defconfig, musl)	1m 40s
buildroot (qemu_x86_64_defconfig, glibc)	1m 39s
buildroot (qemu_x86_64_defconfig, uclibc)	1m 45s
buildroot (qemu_x86_64_defconfig, musl)	1m 51s
buildroot (raspberrypi4_defconfig, glibc)	2m 13s
buildroot (raspberrypi4_defconfig, uclibc)	1m 36s
buildroot (raspberrypi4_defconfig, musl)	2m 3s
buildroot (raspberrypi4_64_defconfig, glibc)	1m 57s
buildroot (raspberrypi4_64_defconfig, uclibc)	1m 31s
buildroot (raspberrypi4_64_defconfig, musl)	1m 34s
buildroot (qemu_ppc64le_pseries_defconfig, glibc)	2m 19s
buildroot (qemu_ppc64le_pseries_defconfig, uclibc)	1m 40s
buildroot (qemu_ppc64le_pseries_defconfig, musl)	1m 37s
buildroot (qemu_mips32r2_malta_defconfig, glibc)	1m 38s
buildroot (qemu_mips32r2_malta_defconfig, uclibc)	1m 26s
buildroot (qemu_mips32r2_malta_defconfig, musl)	1m 46s
buildroot (qemu_mips64_malta_defconfig, glibc)	1m 44s
buildroot (qemu_mips64_malta_defconfig, uclibc)	2m 9s
buildroot (qemu_mips64_malta_defconfig, musl)	1m 35s
buildroot (qemu_riscv32_virt_defconfig, glibc)	1m 42s
buildroot (qemu_riscv32_virt_defconfig, uclibc)	1m 44s
buildroot (qemu_riscv32_virt_defconfig, musl)	1m 43s
buildroot (qemu_riscv64_virt_defconfig, glibc)	2m 19s
buildroot (qemu_riscv64_virt_defconfig, uclibc)	2m 12s
buildroot (qemu_riscv64_virt_defconfig, musl)	1m 56s
	48m 43s

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