ARM64: zynqmp: Fix bootmode SD_MODE1

When only sdhci1 IP is enabled and SD_MODE1 bootmode is selected
U-Boot using sdboot1 variable which refers to mmc dev 1.
But this device doesn't exist because only one controller is available.

This patch fix logic around sdboot mode with using sdbootdev internal
variable.

Reported-by: Chris Kohn <ckohn@xilinx.com>
Acked-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/zynqmp/zynqmp.c

@@ -103,7 +103,10 @@ int board_late_init(void)
 		break;
 	case SD_MODE1:
 		puts("SD_MODE1\n");
-		setenv("modeboot", "sdboot1");
+#if defined(CONFIG_ZYNQ_SDHCI0) && defined(CONFIG_ZYNQ_SDHCI1)
+		setenv("sdbootdev", "1");
+#endif
+		setenv("modeboot", "sdboot");
 		break;
 	case NAND_MODE:
 		puts("NAND_MODE\n");

include/configs/xilinx_zynqmp.h

@@ -156,8 +156,10 @@
 	"kernel_addr=0x80000\0" \
 	"fdt_addr=0x7000000\0" \
 	"fdt_high=0x10000000\0" \
-	"sdboot=mmcinfo && load mmc 0:0 $fdt_addr system.dtb && " \
-		"load mmc 0:0 $kernel_addr Image && booti $kernel_addr - $fdt_addr\0" \
+	"sdbootdev=0\0"\
+	"sdboot=mmc dev $sdbootdev && mmcinfo && load mmc $sdbootdev:$partid $fdt_addr system.dtb && " \
+		"load mmc $sdbootdev:$partid $kernel_addr Image && " \
+		"booti $kernel_addr - $fdt_addr\0" \
 	DFU_ALT_INFO
 
 #define CONFIG_BOOTARGS		"setenv bootargs console=ttyPS0,${baudrate} " \