Kernel: Rename TCPFlags::PUSH => PSH

Let's use the proper name of this TCP flag.

Kernel/Net/TCP.h

@@ -16,7 +16,7 @@ struct TCPFlags {
         FIN = 0x01,
         SYN = 0x02,
         RST = 0x04,
-        PUSH = 0x08,
+        PSH = 0x08,
         ACK = 0x10,
         URG = 0x20
     };

Kernel/Net/TCPSocket.cpp

@@ -207,7 +207,7 @@ ErrorOr<size_t> TCPSocket::protocol_send(const UserOrKernelBuffer& data, size_t
         return set_so_error(EHOSTUNREACH);
     size_t mss = routing_decision.adapter->mtu() - sizeof(IPv4Packet) - sizeof(TCPPacket);
     data_length = min(data_length, mss);
-    TRY(send_tcp_packet(TCPFlags::PUSH | TCPFlags::ACK, &data, data_length, &routing_decision));
+    TRY(send_tcp_packet(TCPFlags::PSH | TCPFlags::ACK, &data, data_length, &routing_decision));
     return data_length;
 }