Remove hardcoded _sbindir global

There is no need to hardcode _sbindir anymore, also
the old value of '/sbin' is incorrect in Fedora now.

Signed-off-by: Vladis Dronov <vdronov@redhat.com>

rng-tools.spec

@@ -1,5 +1,4 @@
 %global _hardened_build 1
-%global _sbindir /sbin
 
 %if 0%{?rhel} && 0%{?rhel} >= 9
 %bcond_with    pkcs11
@@ -12,7 +11,7 @@
 Summary:        Random number generator related utilities
 Name:           rng-tools
 Version:        6.12
-Release:        1%{?dist}
+Release:        2%{?dist}
 License:        GPLv2+
 URL:            https://github.com/nhorman/rng-tools
 Source0:        https://github.com/nhorman/rng-tools/archive/v%{version}/rng-tools-%{version}.tar.gz
@@ -84,6 +83,9 @@ install -Dt %{buildroot}%{_unitdir} -m0644 %{SOURCE1}
 %attr(0644,root,root)   %{_unitdir}/rngd.service
 
 %changelog
+* Wed Apr 28 2021 Vladis Dronov <vdronov@redhat.com> - 6.12-2
+- There is no need to hardcode _sbindir anymore, also the old value is incorrect
+
 * Fri Mar 12 2021 Vladis Dronov <vdronov@redhat.com> - 6.12-1
 - Update to 6.12
 - Drop libsysfs dependency since it is not used anymore