package/numactl: needs atomic

numactl unconditionally uses __atomic_fetch_and resulting in the
following build failure on architectures that need libatomic to provide
atomic intrinsics (e.g. microblaze) since commit
4ed540ddf59bec4b389be44d7f42820d2466904f:

/nvmedata/autobuild/instance-5/output-1/host/lib/gcc/microblaze-buildroot-linux-uclibc/10.3.0/../../../../microblaze-buildroot-linux-uclibc/bin/ld: ./.libs/libnuma.a(libnuma.o): in function `numa_node_to_cpus_v1':
(.text+0x2a34): undefined reference to `__atomic_fetch_and_1'

Fixes:
 - http://autobuild.buildroot.org/results/e225cb83dae390d9dc543d4da85c52180efbd40a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/numactl/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_NUMACTL
 	bool "numactl"
 	depends on BR2_USE_MMU # madvise()
+	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	help
 	  numactl allows you to run your application on specific cpus
 	  and memory nodes. It does this by supplying a NUMA memory

package/rt-tests/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_RT_TESTS
 	bool "rt-tests"
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # __sync_*_4 intrisics
+	depends on BR2_TOOLCHAIN_HAS_ATOMIC # numactl
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 	depends on BR2_USE_MMU # fork(), numactl
@@ -32,6 +33,7 @@ comment "rt-tests may not work on MIPS with an external uClibc toolchain"
 
 comment "rt-tests needs a uClibc or glibc toolchain w/ NPTL, headers >= 4.5, dynamic library"
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
+	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || BR2_STATIC_LIBS \
 		|| BR2_TOOLCHAIN_USES_MUSL || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 	depends on BR2_USE_MMU