tcp-wrappers: Bump PR to make meta-oe merge

meta-oe has a version of tcp-wrappers 7.6 recipe
which has virtually no differences with the one from
oe-core. So with this patch we can remove the recipe
from meta-oe

(From OE-Core rev: 7c503d056d15e376243928ffb815296e9c711658)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/tcp-wrappers/tcp-wrappers_7.6.bb

@@ -5,7 +5,7 @@ SECTION = "console/network"
 
 LICENSE = "tcp-wrappers"
 LIC_FILES_CHKSUM = "file://DISCLAIMER;md5=071bd69cb78b18888ea5e3da5c3127fa"
-PR ="r0"
+PR ="r7"
 
 
 PACKAGES = "${PN}-dbg libwrap libwrap-doc libwrap-dev ${PN} ${PN}-doc"