Building qemu fails on Solaris 11.4

Host environment

• Operating system: Solaris 11.4
• OS/kernel version: SunOS 5.11 11.4.42.111.0 sun4v sparc sun4v non-virtualized
• Architecture: SPARC
• QEMU flavor: qemu-system-hppa
• QEMU version: QEMU emulator version 8.2.50 (v8.2.0-414-g0c1eccd3-dirty)
• QEMU command line:
• Compiler: gcc (GCC) 13.2.0

Description of problem

Building qemu-system-hppa on Solaris 11.4 (details above) fails because in qga/commands-posix.c

(1) Solaris does not have net/ethernet.h

 #if defined(__NetBSD__) || defined(__OpenBSD__)
 #include <net/if_arp.h>
 #include <netinet/if_ether.h>
 #else
 #include <net/ethernet.h>
 #endif

Solaris does have net/if_arp.h and netinet/if_ether.h

(2) Solaris does not define ETHER_ADDR_LEN, instead it defines ETHERADDRL

Steps to reproduce

1. '../configure' '--disable-docs' '--disable-rdma' '--target-list=hppa-softmmu'
2. gmake

Additional information