toolchain: update uClibc snapshot config again to avoid build stalls

Update uClibc snapshot version config to avoid build stalls.

This time we take care of the new UCLIBC_HAS_FTS and
UCLIBC_HAS_BACKTRACE options.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

toolchain/uClibc/uClibc-snapshot.config

@@ -220,6 +220,7 @@ UCLIBC_HAS_FNMATCH=y
 # UCLIBC_HAS_WORDEXP is not set
 UCLIBC_HAS_NFTW=y
 UCLIBC_HAS_FTW=y
+# UCLIBC_HAS_FTS is not set
 UCLIBC_HAS_GLOB=y
 UCLIBC_HAS_GNU_GLOB=y
 # UCLIBC_HAS_UTMPX is not set
@@ -260,6 +261,7 @@ DOSTRIP=y
 # SUPPORT_LD_DEBUG is not set
 # SUPPORT_LD_DEBUG_EARLY is not set
 # UCLIBC_MALLOC_DEBUGGING is not set
+# UCLIBC_HAS_BACKTRACE is not set
 WARNINGS="-Wall"
 # EXTRA_WARNINGS is not set
 # DOMULTI is not set