env: ti: boot: Show boot status information

Add tracing printings to Linux/Android boot commands, so that we can see
what's going on. Helps to trace possible bugs on early stages and
improves the output for user (which is especially useful, because we
have a bunch of boot commands executing one by one).

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/environment/ti/boot.h

@@ -30,11 +30,13 @@
 	"optargs=\0" \
 	"dofastboot=0\0" \
 	"emmc_linux_boot=" \
+		"echo Trying to boot Linux from eMMC ...; " \
 		"setenv mmcdev 1; " \
 		"setenv bootpart 1:2; " \
 		"setenv mmcroot /dev/mmcblk0p2 rw; " \
 		"run mmcboot;\0" \
 	"emmc_android_boot=" \
+		"echo Trying to boot Android from eMMC ...; " \
 		"setenv eval_bootargs setenv bootargs $bootargs; " \
 		"run eval_bootargs; " \
 		"setenv mmcdev 1; " \
@@ -49,7 +51,6 @@
 		"part size mmc ${mmcdev} ${boot_part} boot_size; " \
 		"mmc read ${fdtaddr} ${fdt_start} ${fdt_size}; " \
 		"mmc read ${loadaddr} ${boot_start} ${boot_size}; " \
-		"echo Booting from eMMC ...; " \
 		"bootm $loadaddr $loadaddr $fdtaddr;\0"
 
 #ifdef CONFIG_OMAP54XX