target/toolchain/Config.in: Clarify packaging of toolchain.

Change the "help" info to emphasize that this option refers
specifically to packaging the toolchain that would be built anyway.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>

SVN-Revision: 42912

target/toolchain/Config.in

@@ -1,6 +1,8 @@
 config MAKE_TOOLCHAIN
-	bool "Build the OpenWrt based Toolchain"
+	bool "Package the OpenWrt-based Toolchain"
 	depends on !EXTERNAL_TOOLCHAIN
 	help
-	  This is essentially the toolchain created by OpenWrt.
-
+	  Package the created toolchain as a tarball under the bin/ directory as
+	  OpenWrt-Toolchain-$(BOARD)-for-$(ARCH)$(ARCH_SUFFIX)-gcc-$(GCCV)$(DIR_SUFFIX).
+	  For example, a toolchain for the MIPS architecture might be named
+	  OpenWrt-Toolchain-malta-for-mipsel_mips32-gcc-4.8-linaro_uClibc-0.9.33.2.tar.bz2.