[Buildroot] [PATCH] Fix selection of bootloaders from $(BR2_EXTERNAL)

[Thomas De Schampheleire]

On Sun, Jul 12, 2015 at 7:27 PM, Arnout Vandecappelle (Essensium/Mind)
<arnout at mind.be> wrote:
> From: Eric Le Bihan <eric.le.bihan.dev at free.fr>
>
> If a package is based on "generic-package", pkg-generic.mk will compute
> the name of the Kconfig variable to use for checking if this package has
> been selected by the user.
>
> Unfortunately, this mechanism does not take into account the case where
> a bootloader is declared in a $(BR2_EXTERNAL)/boot directory.
>
> So, even if the bootloader has been selected, it will not be added to
> $(TARGETS) and will not be built.
>
> This patch fixes this issue.
>
> [Arnout: use single filter line, also apply this to toolchain]
>
> Signed-off-by: Eric Le Bihan <eric.le.bihan.dev at free.fr>
> Cc: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>
> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>

Reviewed-by: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>