jacinto6evm: Add sleep after "fastboot oem spi" and "fastboot flash xloader"

This patch adds a 3 second sleep after "fastboot oem spi" and "fastboot
flash xloader" commands to allow the flash probes to complete.

Change-Id: Ib1fbb8d30287fbef1d32e485cb720a74e244d889
Signed-off-by: Shankar Rao <shankar.nrao@ti.com>
1 file changed