sysutils/u-boot-beaglebone: Fix eMMC boot

Due to rename of CONFIG_NAND -> CONFIG_MTD_RAW_NAND the BBB will not boot from eMMC.

https://github.com/u-boot/u-boot/commit/88718be3001055fa2801a44ab10570279b3f2cb7

https://github.com/u-boot/u-boot/commit/d4c2f6b7e3e2bfd297367d292aa641095c7a18e2

Submitted by:	 Oskar Holmund (oskar.holmlund@ohdata.se)
Differential Revision:	https://reviews.freebsd.org/D25190

sysutils/u-boot-beaglebone/Makefile

@@ -6,6 +6,8 @@ MODEL=		beaglebone
 BOARD_CONFIG=	am335x_evm_defconfig
 FAMILY=		omap
 
+U_BOOT_SLAVE_PORTREVISION_2020.04=	1
+
 CONFIG_FRAGMENT=	${.CURDIR}/files/bbb_fragment
 FRAGMENT_NAME=		bbb_fragment
 

sysutils/u-boot-beaglebone/files/bbb_fragment

@@ -2,7 +2,8 @@ CONFIG_API=y
 CONFIG_ARMV7_NONSEC=n
 CONFIG_CMD_CACHE=y
 CONFIG_BOOTCOMMAND="if test ${boot_fit} -eq 1; then run update_to_fit; fi; run findfdt; run init_console; setenv boot_targets mmc0 mmc1 pxe dhcp; run distro_bootcmd"
-CONFIG_NAND=n
+CONFIG_MTD=n
+CONFIG_MTD_RAW_NAND=n
 CONFIG_SPL_NAND_SUPPORT=n
 CONFIG_CMD_NAND=n
 CONFIG_DFU_NAND=n