uclibc: snapshot: add BSD obsolete signal functions

Fixes
http://autobuild.buildroot.net/results/70b/70b79ca0aa97ed451a5679029955ed3709c84b67/.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uclibc/uClibc-snapshot.config

@@ -152,7 +152,7 @@ UCLIBC_LINUX_SPECIFIC=y
 UCLIBC_HAS_GNU_ERROR=y
 UCLIBC_BSD_SPECIFIC=y
 UCLIBC_HAS_BSD_ERR=y
-# UCLIBC_HAS_OBSOLETE_BSD_SIGNAL is not set
+UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y
 # UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set
 # UCLIBC_NTP_LEGACY is not set
 # UCLIBC_SV4_DEPRECATED is not set