whois: bump to version 5.2.0

Also add hash file.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/whois/whois.hash

@@ -0,0 +1,2 @@
+# From http://ftp.debian.org/debian/pool/main/w/whois/whois_5.2.0.dsc
+sha256	f487bba00fc506b18b519d913509d9e050cba0b6f025e26a50b29b3e6322530b	whois_5.2.0.tar.xz

package/whois/whois.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-WHOIS_VERSION = 5.1.3
+WHOIS_VERSION = 5.2.0
 WHOIS_SITE = $(BR2_DEBIAN_MIRROR)/debian/pool/main/w/whois
 WHOIS_SOURCE = whois_$(WHOIS_VERSION).tar.xz
 # take precedence over busybox implementation