[OE-core] UBOOT_SUFFIX scope

[Kristian Amlie]

Hey,

I'm wondering about UBOOT_SUFFIX, this variable is currently set in
meta/recipes-bsp/u-boot/u-boot.inc. However, to be truly useful, it
seems to me that it should be available from outside the u-boot recipe
as well. For example, it is common to refer to the complete file name,
including the suffix, when building an image that contains a bootloader.

Does this make sense, or am I missing an obvious way of getting at this
variable?

-- 
Kristian