Revert "configs: stm32mp1: only support SD card after NOR in bootcmd_stm32mp"

This reverts commit d5d726d3cc47691ace3c68fa31147ad104aaf579,
which breaks boards which ship with multiple SD/eMMC sockets.

This stm32mp1.h config is not used only by the ST reference
boards, but all the other STM32MP1 based boards in U-Boot, so
changes to this stm32mp1.h cannot break the other boards.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/include/configs/stm32mp1.h b/include/configs/stm32mp1.h
index fb4e4fb..2dab1db 100644
--- a/include/configs/stm32mp1.h
+++ b/include/configs/stm32mp1.h
@@ -115,7 +115,7 @@
  * for serial/usb: execute the stm32prog command
  * for mmc boot (eMMC, SD card), boot only on the same device
  * for nand or spi-nand boot, boot with on ubifs partition on UBI partition
- * for nor boot, use SD card = mmc0
+ * for nor boot, use the default order
  */
 #define STM32MP_BOOTCMD "bootcmd_stm32mp=" \
 	"echo \"Boot over ${boot_device}${boot_instance}!\";" \
@@ -128,8 +128,6 @@
 		"if test ${boot_device} = nand ||" \
 		  " test ${boot_device} = spi-nand ;" \
 		"then env set boot_targets ubifs0; fi;" \
-		"if test ${boot_device} = nor;" \
-		"then env set boot_targets mmc0; fi;" \
 		"run distro_bootcmd;" \
 	"fi;\0"