package/libatomic_ops: bump version to 7.4.2

Also add project URL to Config.in

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libatomic_ops/Config.in

@@ -7,3 +7,5 @@ config BR2_PACKAGE_LIBATOMIC_OPS
 	depends on BR2_PACKAGE_LIBATOMIC_ARCH_SUPPORTS
 	help
 	  Atomic operations library
+
+	  https://github.com/ivmai/libatomic_ops

package/libatomic_ops/libatomic_ops.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBATOMIC_OPS_VERSION = libatomic_ops-7_4_0
+LIBATOMIC_OPS_VERSION = libatomic_ops-7_4_2
 LIBATOMIC_OPS_SITE = $(call github,ivmai,libatomic_ops,$(LIBATOMIC_OPS_VERSION))
 LIBATOMIC_OPS_AUTORECONF = YES