ARC: enable IPv6 in defconfigs

These days IPv6 is used more and more in different software
packages. And so we're adding IPv6 support by default in uClibc
for ARC cores.

Signed-off-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

extra/Configs/defconfigs/arc/arcv2_defconfig

@@ -19,6 +19,7 @@ UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y
 UCLIBC_HAS_LIBUTIL=y
 UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y
 UCLIBC_SV4_DEPRECATED=y
+UCLIBC_HAS_IPV6=y
 UCLIBC_HAS_RPC=y
 UCLIBC_HAS_FULL_RPC=y
 UCLIBC_USE_NETLINK=y

extra/Configs/defconfigs/arc/defconfig

@@ -18,6 +18,7 @@ UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y
 UCLIBC_HAS_LIBUTIL=y
 UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y
 UCLIBC_SV4_DEPRECATED=y
+UCLIBC_HAS_IPV6=y
 UCLIBC_HAS_RPC=y
 UCLIBC_HAS_FULL_RPC=y
 UCLIBC_USE_NETLINK=y