Commit 86acdce2ba88 ("common: add config for board_init() call")
introduced CONFIG_BOARD_INIT option. This option can be disabled for the
boards where board_init() function is not needed. Remove empty
board_init() calls for all boards where it's possible, and disable
CONFIG_BOARD_INIT in all related defconfigs.

This cleanup was made semi-automatically using these scripts: [1].

No functional change, but the binary size for the modified boards is
reduced a bit.

[1] https://github.com/joe-skb7/uboot-convert-scripts/tree/master/remove-board-init

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Tested-by: Adam Ford <aford173@gmail.com> #imx8mm_beacon
Tested-by: Bryan Brattlof <bb@ti.com>
Acked-by: Peng Fan <peng.fan@nxp.com>  #NXP boards

This patch adds general board files based on MT7987 SoC.

MT7987 uses one mmc controller for booting from both SD and eMMC, and the
pins of mmc controller are also shared with one spi controller.
So three configs are need for these boot types:

1. mt7987_rfb_defconfig - SPI-NOR (spi2) and SPI-NAND (spi0)
2. mt7987_emmc_rfb_defconfig - eMMC + SPI-NOR (spi2)
3. mt7987_sd_rfb_defconfig - SD + SPI-NOR (spi2)

Note: spi2 also supports booting from SPI-NAND, but not the default option.

Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>