crossgcc: Update toolchain

Update GCC to 4.9.2, binutils to 2.25.

Change-Id: Iae9763163b7f42c55a39e26b4beedee67d14a6e4
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/8628
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
3 files changed