elfutils: disable on Blackfin, problem of assembly symbol prefix

Fixes:

  http://autobuild.buildroot.org/results/922/92291286e86f9ea943ae7aa58cbd884c8db0c5d2/

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

package/elfutils/Config.in

@@ -1,5 +1,6 @@
 comment "elfutils needs a toolchain w/ largefile, wchar"
 	depends on !BR2_avr32
+	depends on !BR2_bfin
 	depends on !BR2_LARGEFILE || !BR2_USE_WCHAR
 
 config BR2_PACKAGE_ELFUTILS
@@ -11,6 +12,9 @@ config BR2_PACKAGE_ELFUTILS
 	# canonicalize_file_name() not available on uClibc 0.9.31, used
 	# only for AVR32
 	depends on !BR2_avr32
+	# build issue caused by the _ prefix used on blackfin for
+	# assembly symbols
+	depends on !BR2_bfin
 	help
 	  Libraries/utilities to handle ELF objects (drop in
 	  replacement for libelf).