The NOR flash on Keystone 2 evms has a u-boot-spl partition size of
0x80000.
Currently burn_uboot_spi will erase 0x100000 from the spi NOR which will
cause a partial erase of the misc partition.
Fix this by correcting the erase size.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
        "get_mon_net=dhcp ${addr_mon} ${tftp_root}/${name_mon}\0"       \
        "get_mon_ubi=ubifsload ${addr_mon} ${name_mon}\0"               \
        "get_uboot_net=dhcp ${loadaddr} ${tftp_root}/${name_uboot}\0"   \
-       "burn_uboot_spi=sf probe; sf erase 0 0x100000; "                \
+       "burn_uboot_spi=sf probe; sf erase 0 0x80000; "         \
                "sf write ${loadaddr} 0 ${filesize}\0"          \
        "burn_uboot_nand=nand erase 0 0x100000; "                       \
                "nand write ${loadaddr} 0 ${filesize}\0"                \