Patch merged into coreboot/master: $(top)/Makefile: Strip the white space in function strip_quotes

the following patch was just integrated into master:
commit 07648928ebe363be33f2a6b51b91a0c290f7951a
Author: Zheng Bao 
Date:   Fri Nov 13 10:42:27 2015 +0800

$(top)/Makefile: Strip the white space in function strip_quotes

Change-Id: I5e8cf2ccd1cd53b863cf8d24353428f3c183b68c
    Signed-off-by: Zheng Bao 
    Reviewed-on: http://review.coreboot.org/12434
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See http://review.coreboot.org/12434 for details.

-gerrit