Support NEXT_SECTION in ALIGNOF and SIZEOF

[Alan Modra]

On Wed, Jul 12, 2023 at 01:24:33PM +0930, Alan Modra wrote:
> This patch is aimed at making __bss_start properly aligned with the
> first of any bss-style sections following.  Most of the work here
> involves keeping track of the last output section seen when processing
> the linker script.

Since no one commented on this, I've gone ahead and committed the
patch.

-- 
Alan Modra
Australia Development Lab, IBM