package/libatomic_ops: bump version to 7.8.4

Release notes:
https://github.com/bdwgc/libatomic_ops/releases/tag/v7.8.4

Updated _SITE and project URL following upstream:
https://github.com/bdwgc/libatomic_ops/commit/7fc1a8151aaa660c5991f06e80cc793df0b1c0fc

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

package/libatomic_ops/Config.in

@@ -15,4 +15,4 @@ config BR2_PACKAGE_LIBATOMIC_OPS
 	help
 	  Atomic operations library
 
-	  https://github.com/ivmai/libatomic_ops
+	  https://github.com/bdwgc/libatomic_ops

package/libatomic_ops/libatomic_ops.hash

@@ -1,4 +1,4 @@
 # Locally calculated
-sha256  ad8428a40e01d41bc4ddad3166afa1fc175c9e58d8ef7ddbd7ef3298e32ac37b  libatomic_ops-7.8.2.tar.gz
+sha256  ea8295ac627646e37fd194d31535bbc02da60b908c8166c5e04d2461a53cb059  libatomic_ops-7.8.4.tar.gz
 sha256  969294c9324b2d360ae2a08edd5ca6f9cd754cb71b71e56bee15d2f10bb10496  LICENSE
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING

package/libatomic_ops/libatomic_ops.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-LIBATOMIC_OPS_VERSION = 7.8.2
-LIBATOMIC_OPS_SITE = $(call github,ivmai,libatomic_ops,v$(LIBATOMIC_OPS_VERSION))
+LIBATOMIC_OPS_VERSION = 7.8.4
+LIBATOMIC_OPS_SITE = $(call github,bdwgc,libatomic_ops,v$(LIBATOMIC_OPS_VERSION))
 LIBATOMIC_OPS_AUTORECONF = YES
 
 # From doc/LICENSING.txt: "Our intent is to make it easy to use