[U-Boot] "best practice" for including common header file content?

[Robert P. J. Day]

  more excruciatingly pedantic queries ... what is the best practice
for header files under include/configs including common header files
also in that same directory. i give you:

$ git grep zynq-common.h
bitmain_antminer_s9.h:#include <configs/zynq-common.h>
syzygy_hub.h: * See zynq-common.h for Zynq common configs
syzygy_hub.h:#include <configs/zynq-common.h>
topic_miami.h: * See zynq-common.h for Zynq common configs
topic_miami.h:#include "zynq-common.h"
zynq_cse.h: * See zynq-common.h for Zynq common configs
zynq_cse.h:#include <configs/zynq-common.h>
$

  so some of them include "zynq-common.h", while others include
<configs/zynq-common.h>. naturally, both work -- does u-boot have a
stylistic preference?

rday