[generic] Backport roundup, rounddown, max and min functions.
[brcm63xx] Add support for defining WiFi calibration partitions.
[brcm63xx] Fix Broadcom 6328 config.
[brcm63xx] Add support for ath9k caldata.
[brcm63xx] board_bcm963xx cleanups.
[brcm63xx] Add support for Huawei HG556a.
[brcm63xx] Avoid using specific macros for HG553 and HG556a.
[brcm63xx] Fix HG553 and HG556a ethernet.
[brcm63xx] Remove support for ath9k on Huawei HG556a.
[brcm63xx] Add support for rt2x00 caldata.