toolchain-external: fix Linaro 2014.02 symlink

In commit cd32da8f7931af61737df293d1f8bcedaab8648e
("toolchain-external: add Linaro ARM big endian toolchain") a mistake
was made, probably due to a rebase conflict that was incorrectly solved:
the call to the post install staging hook that creates the necessary
symbolic links for a root filesystem based on Linaro 2014.02 to work
was removed.

This commit reinstates this call, which should fix the problem
observed by Maxime Hadjinlian while using Linaro 2014.02.

Reported-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

toolchain/toolchain-external/toolchain-external.mk

@@ -286,6 +286,7 @@ TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_LINARO_ARMHF
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2014_02),y)
 TOOLCHAIN_EXTERNAL_SITE = http://releases.linaro.org/14.02/components/toolchain/binaries/
 TOOLCHAIN_EXTERNAL_SOURCE = gcc-linaro-arm-linux-gnueabihf-4.8-2014.02_linux.tar.xz
+TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_LINARO_ARMHF_SYMLINK
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB),y)
 TOOLCHAIN_EXTERNAL_SITE = http://releases.linaro.org/14.02/components/toolchain/binaries/
 TOOLCHAIN_EXTERNAL_SOURCE = gcc-linaro-armeb-linux-gnueabihf-4.8-2014.02_linux.tar.xz