oprofile: add dependency on librt, it seems to be needed in some configurations

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 45280

package/devel/oprofile/Makefile

@@ -31,7 +31,7 @@ define Package/oprofile
   CATEGORY:=Development
   TITLE:=OProfile System Profiler
   URL:=http://oprofile.sourceforge.net
-  DEPENDS:=+libpopt +kmod-oprofile +libstdcpp +objdump @(!TARGET_uml||BROKEN)
+  DEPENDS:=+libpopt +kmod-oprofile +libstdcpp +objdump +librt @(!TARGET_uml||BROKEN)
 endef
 
 define Package/oprofile/description