pkg/ndctl/PKGBUILD: fix iniparser.h include

The iniparser.h's path is different for different distributions.
For arch the path is /usr/include.
For ubuntu/debian the path is /usr/include/iniparser

Fix following issue:

```
../util/parse-configs.c:7:10: fatal error: iniparser.h: No such file or directory
    7 | #include <iniparser.h>
```

makepkg RT:

```
{
  "makepkg.pass": [
    1
  ]
}
```

Link: pmem/ndctl#186
Signed-off-by: Zou Yu <[email protected]>
Signed-off-by: Philip Li <[email protected]>

pkg/ndctl/PKGBUILD

@@ -9,6 +9,7 @@ md5sums=('SKIP')
 
 build() {
 	cd "$srcdir/${pkgname}"
+	[[ -e '/usr/include/iniparser.h' ]] || cp /usr/include/iniparser/* /usr/include/
 	meson setup build
 	meson configure -Dtest=enabled -Ddocs=disabled -Drootprefix=/lkp -Dprefix=/lkp/benchmarks build
 	meson compile -C build