Update buidlroot to version 2016.08.1

bsp/buildroot/arch/Config.in

@@ -94,8 +94,7 @@ config BR2_i386
 
 config BR2_m68k
 	bool "m68k"
-	select BR2_ARCH_HAS_MMU_MANDATORY
-	depends on BROKEN # ice in uclibc / inet_ntoa_r
+	# MMU support is set by the subarchitecture file, arch/Config.in.m68k
 	help
 	  Motorola 68000 family microprocessor
 	  http://en.wikipedia.org/wiki/M68k
@@ -337,12 +336,19 @@ config BR2_BINFMT_FLAT_ONE
 
 config BR2_BINFMT_FLAT_SEP_DATA
 	bool "Separate data and code region"
+	# this FLAT binary type technically exists on m68k, but fails
+	# to build numerous packages: due to architecture limitation,
+	# big functions cannot be built in this mode. They cause build
+	# failures such as "Tried to convert PC relative branch to
+	# absolute jump" or "error: value -yyyyy out of range".
+	depends on BR2_bfin
 	help
 	  Allow for the data and text segments to be separated and placed in
 	  different regions of memory.
 
 config BR2_BINFMT_FLAT_SHARED
 	bool "Shared binary"
+	depends on BR2_m68k || BR2_bfin
 	# Even though this really generates shared binaries, there is no libdl
 	# and dlopen() cannot be used. So packages that require shared
 	# libraries cannot be built. Therefore, we don't select