boost: coroutine needs chrono, system, thread

output/host/usr/bin/arm-buildroot-linux-uclibcgnueabihf-readelf -d output/staging/usr/lib/libboost_coroutine.so

Dynamic section at offset 0xdee8 contains 31 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libboost_chrono.so.1.67.0]
 0x00000001 (NEEDED)                     Shared library: [libboost_context.so.1.67.0]
 0x00000001 (NEEDED)                     Shared library: [libboost_thread.so.1.67.0]
 0x00000001 (NEEDED)                     Shared library: [libboost_system.so.1.67.0]

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/boost/Config.in

@@ -101,7 +101,10 @@ config BR2_PACKAGE_BOOST_COROUTINE
 	bool "boost-coroutine"
 	depends on BR2_PACKAGE_BOOST_CONTEXT_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # boost-context
+	select BR2_PACKAGE_BOOST_CHRONO
 	select BR2_PACKAGE_BOOST_CONTEXT
+	select BR2_PACKAGE_BOOST_SYSTEM
+	select BR2_PACKAGE_BOOST_THREAD
 	help
 	  deprecated coroutine library, the non-depricated coroutine2
 	  library is a header-only library and does not need to be