[U-Boot] U-Boot 2019.01-rc1-00337-g42cc2cf partition table issues on imx6

[Petr Štetiar]

Hi,

I'm having problems with my bootscript which works on 2018.03 but is having
problems on latest master. I need to run `mmc part` to get it working.

	U-Boot 2019.01-rc1-00337-g42cc2cf (Dec 16 2018 - 01:02:22 +0100)
	Model: Toradex Apalis iMX6 Quad 2GB IT V1.1A, Serial# 04875944

	# mmc dev 0
	switch to partitions #0, OK
	mmc0(part 0) is current device

	# load mmc 0:1 ${loadaddr} ${script}
	** No partition table - mmc 0 **

	# mmc part

	Partition Map for MMC device 0  --   Partition Type: DOS

	Part    Start Sector    Num Sectors     UUID            Type
	  1     2048            32768           5452574f-01     83 Boot
	  2     36864           524288          5452574f-02     83a

	# load mmc 0:1 ${loadaddr} ${script}
	641 bytes read in 26 ms (23.4 KiB/s)

Same problem with `ext4ls`:

	# mmc dev 0
	switch to partitions #0, OK
	mmc0(part 0) is current device
	
	# ext4ls mmc 0:1
	** No partition table - mmc 0 **
	
	# mmc part
	
	Partition Map for MMC device 0  --   Partition Type: DOS
	
	Part    Start Sector    Num Sectors     UUID            Type
	  1     2048            32768           5452574f-01     83 Boot
	  2     36864           524288          5452574f-02     83

	# ext4ls mmc 0:1
	<DIR>       4096 .
	<DIR>       4096 ..
	<DIR>       4096 lost+found
	             641 boot.scr
	           47312 imx6q-apalis-ixora.dtb
	         2521736 uImage

-- ynezz