Patch merged into coreboot/master: libpayload: Fix compilation on ARM with GDB enabled

the following patch was just integrated into master:
commit 088c1894f825a14e769c7b3d36333f5e4b6d0685
Author: Stefan Reinauer <[e-mail]>
Date:   Wed Jul 1 11:48:57 2015 -0700

    libpayload: Fix compilation on ARM with GDB enabled
    
    Without this, gdb_enter() is not defined.
    
    Change-Id: I067dce371ee817d6ac77387fcbe42a9a7deb6438
    Signed-off-by: Stefan Reinauer <[e-mail]>
    Reviewed-on: http://review.coreboot.org/10755
    Reviewed-by: Patrick Georgi <[e-mail]>
    Tested-by: build bot (Jenkins)


See http://review.coreboot.org/10755 for details.

-gerrit