pkgconfig: really use make install for BR2_ENABLE_DEBUG

package/pkgconfig/pkgconfig.mk

@@ -8,7 +8,7 @@ PKG_CONFIG_SOURCE = pkg-config-$(PKG_CONFIG_VERSION).tar.gz
 PKG_CONFIG_SITE = http://pkgconfig.freedesktop.org/releases/
 
 ifeq ($(BR2_ENABLE_DEBUG),y) # install-exec doesn't install aclocal stuff
-PKG_CONFIG_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install-exec
+PKG_CONFIG_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install
 endif
 
 PKG_CONFIG_DEPENDENCIES = uclibc libglib2