net/usrsock: replace net_lock with usrsock_lock

[zhhyu7]

Summary

remove the use of net_lock in the usrsock module and decouple it from other network modules.

Impact

net::usrsock

Testing

sim:rpserver and sim:rpproxy with ping and iperf
NuttX log:

NuttShell (NSH) NuttX-12.12.0-RC0
server> ifconfig eth0 10.0.1.2/24
server> 
server> cu

NuttShell (NSH) NuttX-12.12.0-RC0
proxy> 
proxy> ping -c 3 10.0.1.1
PING 10.0.1.1 56 bytes of data
56 bytes from 10.0.1.1: icmp_seq=0 time=40.0 ms
56 bytes from 10.0.1.1: icmp_seq=1 time=50.0 ms
56 bytes from 10.0.1.1: icmp_seq=2 time=40.0 ms
3 packets transmitted, 3 received, 0% packet loss, time 3030 ms
rtt min/avg/max/mdev = 40.000/43.333/50.000/4.717 ms
proxy> iperf -c 10.0.1.1 -B 10.0.1.2
     IP: 10.0.1.2

 mode=tcp-client sip=10.0.1.2:5001,dip=10.0.1.1:5001, interval=3, time=30

           Interval         Transfer         Bandwidth

  -0.00-   3.01 sec    1228800 Bytes    3.27 Mbits/sec
   3.01-   6.02 sec    1228800 Bytes    3.27 Mbits/sec
   6.02-   9.03 sec    1236992 Bytes    3.29 Mbits/sec
   9.03-  12.04 sec    1228800 Bytes    3.27 Mbits/sec
  12.04-  15.05 sec    1236992 Bytes    3.29 Mbits/sec
  15.05-  18.06 sec    1228800 Bytes    3.27 Mbits/sec
  18.06-  21.07 sec    1236992 Bytes    3.29 Mbits/sec
  21.07-  24.08 sec    1228800 Bytes    3.27 Mbits/sec
  24.08-  27.09 sec    1236992 Bytes    3.29 Mbits/sec
  27.09-  30.10 sec    1228800 Bytes    3.27 Mbits/sec
  -0.00-  30.10 sec   12320768 Bytes    3.27 Mbits/sec
iperf exit
proxy> iperf -s -B 10.0.1.2
     IP: 10.0.1.2

 mode=tcp-server sip=10.0.1.2:5001,dip=0.0.0.0:5001, interval=3, time=0
accept: 10.0.1.1:58450

           Interval         Transfer         Bandwidth

   0.00-   3.01 sec    1228800 Bytes    3.27 Mbits/sec
   3.01-   6.02 sec    1228800 Bytes    3.27 Mbits/sec
   6.02-   9.03 sec    1236992 Bytes    3.29 Mbits/sec
closed by the peer: 10.0.1.1:58450
iperf exit
proxy> 

[acassis]

@zhhyu7 please fix this CI error:

Error: /github/workspace/sources/nuttx/include/nuttx/net/usrsock.h:322:10: error: implicit declaration of function 'net_sem_timedwait2'; did you mean 'nxsem_timedwait'? [-Wimplicit-function-declaration]
322 | return net_sem_timedwait2(sem, interruptible, timeout, &g_usrsock_lock,
| ^~~~~~~~~~~~~~~~~~
| nxsem_timedwait
make[1]: *** [Makefile:109: drivers_initialize.o] Error 1
make[1]: Target 'libdrivers.a' not remade because of errors.
make: *** [tools/LibTargets.mk:107: drivers/libdrivers.a] Error 2
make: Target 'all' not remade because of errors.