net/freerdp3: fix "sysinfo" breakage

After upstream commit
FreeRDP/FreeRDP@4732f37
net/freerdp3 build fails in enveronments without devel/libsysinfo installed.
But with devel/libsysinfo installed net/freerdp3 grab silently
LOCALBASE/include/sys/sysinfo.h, build without errors, but sdl-freerdp
and wlfreerdp3 run failed with error:
ld-elf.so.1: /usr/local/lib/libwinpr3.so.3: Undefined symbol "sysinfo"

Upstream check supported version of the posix using _POSIX_C_SOURCE define.
This doesn't work on FreeBSD.
Together with upstream trying to find correct solution...

Approved by:	arrowd (mentor)

net/freerdp3/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	freerdp
 DISTVERSION=	3.4.0
+PORTREVISION=	1
 CATEGORIES=	net comms
 MASTER_SITES=	https://pub.freerdp.com/releases/ \
 		https://github.com/FreeRDP/FreeRDP/releases/download/${DISTVERSION}/

net/freerdp3/files/patch-winpr_libwinpr_sysinfo_sysinfo.c

@@ -0,0 +1,29 @@
+--- winpr/libwinpr/sysinfo/sysinfo.c.orig	2024-03-14 10:28:33 UTC
++++ winpr/libwinpr/sysinfo/sysinfo.c
+@@ -34,7 +34,7 @@
+ #endif
+
+ #if !defined(_WIN32)
+-#if defined(_POSIX_SOURCE) && (_POSIX_C_SOURCE >= 200112L)
++#if (_POSIX_C_SOURCE >= 200112L) || defined(__FreeBSD__)
+ #include <time.h>
+ #elif !defined(__APPLE__)
+ #include <sys/time.h>
+@@ -579,7 +579,7 @@ ULONGLONG winpr_GetTickCount64(void)
+ UINT64 winpr_GetTickCount64NS(void)
+ {
+ 	UINT64 ticks = 0;
+-#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L)
++#if (_POSIX_C_SOURCE >= 200112L) || defined(__FreeBSD__)
+ 	struct timespec ts = { 0 };
+
+ 	if (clock_gettime(CLOCK_MONOTONIC_RAW, &ts) == 0)
+@@ -632,7 +632,7 @@ UINT64 winpr_GetUnixTimeNS(void)
+ 	} t = { 0 };
+ 	GetSystemTimeAsFileTime(&t.ft);
+ 	return (t.u64 - FILETIME_TO_UNIX_OFFSET_S * 10000000ull) * 100ull;
+-#elif _POSIX_C_SOURCE >= 200112L
++#elif (_POSIX_C_SOURCE >= 200112L) || defined(__FreeBSD__)
+ 	struct timespec ts = { 0 };
+ 	if (clock_gettime(CLOCK_REALTIME, &ts) != 0)
+ 		return 0;