lantiq: ltq-vdsl-app: re-add showtime counters support

The typicial feature set doesn't include "DSL PM showtime counters support"
(INCLUDE_DSL_CPE_PM_SHOWTIME_COUNTERS). This feature provides the
vdsl_cpe_control command 'pmccsg', which is used by 'dsl_control status' to get
the line uptime.

The binary size increases to 103912 byte (+4256 byte) uncompressed.

Signed-off-by: Mathias Kresin <openwrt@kresin.me>

SVN-Revision: 47887

package/network/config/ltq-vdsl-app/Makefile

@@ -47,7 +47,8 @@ CONFIGURE_ARGS += \
 	--enable-dsl-ceoc=no \
 	--enable-vrx-device=vr9 \
 	--disable-dti \
-	--enable-debug
+	--enable-debug \
+	--enable-dsl-pm-showtime
 
 ifeq ($(CONFIG_IFX_CLI),y)
 CONFIGURE_ARGS += \