libcap: fix .pc file

package/libcap/Makefile

@@ -5,7 +5,7 @@ include $(ADK_TOPDIR)/rules.mk
 
 PKG_NAME:=		libcap
 PKG_VERSION:=		2.25
-PKG_RELEASE:=		1
+PKG_RELEASE:=		2
 PKG_HASH:=		693c8ac51e983ee678205571ef272439d83afe62dd8e424ea14ad9790bc35162
 PKG_DESCR:=		capabilities library
 PKG_SECTION:=		libs/misc

package/libcap/patches/patch-libcap_libcap_pc_in

@@ -0,0 +1,13 @@
+--- libcap-2.25.orig/libcap/libcap.pc.in	2013-12-24 18:08:53.000000000 +0100
++++ libcap-2.25/libcap/libcap.pc.in	2018-01-01 20:11:08.911444653 +0100
+@@ -1,7 +1,7 @@
+ prefix=@prefix@
+-exec_prefix=@exec_prefix@
+-libdir=@libdir@
+-includedir=@includedir@
++exec_prefix=${prefix}
++libdir=${prefix}/lib
++includedir=${prefix}/include
+ 
+ Name: libcap
+ Description: libcap