suse: do not BuildRequire valgrind on loongarch64

valgrind is not available on loongarch64

Signed-off-by: Nicolas Morey <nmorey@suse.com>

Author: nmorey

suse/rdma-core.spec

@@ -88,7 +88,7 @@ BuildRequires:  pkgconfig(udev)
 BuildRequires:  python3-Cython
 BuildRequires:  python3-devel
 %endif
-%ifnarch s390 s390x
+%ifnarch s390 s390x loongarch64
 %if 0%{?suse_version} >= 1550
 BuildRequires:  valgrind-client-headers
 %else