ndisc6: fix bogus <pkg>_DEPENDENCIES names

Spotted by check-package:

package/ndisc6/ndisc6.mk:14: possible typo: NDISC8_DEPENDENCIES -> *NDISC6*

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ndisc6/ndisc6.mk

@@ -11,7 +11,7 @@ NDISC6_CONF_ENV = CC="$(TARGET_CC) -std=gnu99" LIBS=$(TARGET_NLS_LIBS)
 NDISC6_CONF_OPTS = --disable-rpath --disable-suid-install
 NDISC6_LICENSE = GPL-2.0 or GPL-3.0
 NDISC6_LICENSE_FILES = COPYING
-NDISC8_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
+NDISC6_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
 
 NDISC6_BIN_ += dnssort # perl script
 NDISC6_BIN_$(BR2_PACKAGE_NDISC6_NAME2ADDR) += name2addr addr2name