arm64: imx: Add support for imx8mp-beacon-kit

Beacon Embedded has an i.MX8M Plus development kit which consists
of a SOM + baseboard.  The SOM includes Bluetooth, WiFi, QSPI, eMMC,
and one Ethernet PHY. The baseboard includes audio, HDMI, USB-C Dual
Role port, USB Hub with five ports, a PCIe slot, and a second Ethernet
PHY.  The device trees are already queued for inclusion in Linux 6.3.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/beacon/imx8mp/imx8mp_beacon.env b/board/beacon/imx8mp/imx8mp_beacon.env
new file mode 100644
index 0000000..ec9fbd3
--- /dev/null
+++ b/board/beacon/imx8mp/imx8mp_beacon.env
@@ -0,0 +1,19 @@
+boot_fdt=try
+boot_fit=no
+console=ttymxc1,115200
+fdt_addr=0x43000000
+fdt_addr_r=0x43000000
+fdt_file=imx8mp-beacon-kit.dtb
+finduuid=part uuid mmc ${mmcdev}:2 uuid
+image=Image
+kernel_addr_r=0x40480000
+loadfdt=echo ${fdt_file}; fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr_r} ${fdt_file}
+loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}
+mmcargs=setenv bootargs console=${console}  root=PARTUUID=${uuid} rootwait rw ${mtdparts} ${optargs}
+mmcboot=echo Booting from mmc ...; run finduuid; run mmcargs; if test ${boot_fit} = yes || test ${boot_fit} = try; then bootm ${loadaddr}; else if run loadfdt; then booti ${loadaddr} - ${fdt_addr_r}; else echo WARN: Cannot load the DT; fi; fi;
+mmcdev=1
+mmcpart=1
+netargs=setenv bootargs ${jh_clk} console=${console} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp
+netboot=echo Booting from net ...; run netargs;  if test ${ip_dyn} = yes; then setenv get_cmd dhcp; else setenv get_cmd tftp; fi; ${get_cmd} ${loadaddr} ${image}; if test ${boot_fit} = yes || test ${boot_fit} = try; then bootm ${loadaddr}; else if ${get_cmd} ${fdt_addr_r} ${fdt_file}; then booti ${loadaddr} - ${fdt_addr_r}; else echo WARN: Cannot load the DT; fi; fi;
+optargs=audit=0 video=LVDS-1:d video=LVDS-2:d
+scriptaddr=0x40480000