Patch merged into coreboot/master: ea9f308 build system: normalize linker script file names

the following patch was just integrated into master:
commit ea9f30801822716349772157e12d943b11975521
Author: Patrick Georgi 
Date:   Fri Mar 27 13:50:11 2015 +0100

build system: normalize linker script file names

We have .lb, .lds, and .ld in the tree. Go for .ld everywhere.

This is inspired by the commit listed below, but rewritten to match
    upstream, and split in smaller pieces to keep intent clear.

Change-Id: I3126af608afe4937ec4551a78df5a7824e09b04b
    Signed-off-by: Patrick Georgi 
    Based-On-Change-Id: I50af7dacf616e0f8ff4c43f4acc679089ad7022b
    Based-On-Signed-off-by: Julius Werner 
    Based-On-Reviewed-on: https://chromium-review.googlesource.com/219170
    Reviewed-on: http://review.coreboot.org/9107
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer 
    Reviewed-by: Paul Menzel

See http://review.coreboot.org/9107 for details.

-gerrit