Add broadcast socket option keeper

rpcs3/Emu/Cell/lv2/sys_net/lv2_socket.h

@@ -138,6 +138,8 @@ protected:
 	// Socket options value keepers
 	// Non-blocking IO option
 	s32 so_nbio = 0;
+	// Broadcast option
+	s32 so_broadcast = 0;
 	// Error, only used for connection result for non blocking stream sockets
 	s32 so_error = 0;
 	// Unsupported option

rpcs3/Emu/Cell/lv2/sys_net/lv2_socket_p2p.cpp

@@ -219,6 +219,10 @@ s32 lv2_socket_p2p::setsockopt(s32 level, s32 optname, const std::vector<u8>& op
 	{
 		so_nbio = native_int;
 	}
+	else if (level == SYS_NET_SOL_SOCKET && optname == SYS_NET_SO_BROADCAST)
+	{
+		so_broadcast = native_int;
+	}
 
 	const u64 key = (static_cast<u64>(level) << 32) | static_cast<u64>(optname);
 	sockopt_cache cache{};