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由 Scott Wood 提交于
This was already used by some SPL targets, and allows the pad amount to be specified by board config headers rather than only in makefile fragments. Also supply a pad-to of zero if the variable is undefined. It works without this, but this avoids relying on undocumented behavior. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
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