commands: mmc_extcsd: Fix incorrect usage of sprintf
In a number of places print_field_ge_v7() and print_field() function
would call sprintf() without providing is with appropriate output
buffer (str is initialized to NULL). Replace the sprintf() with
basprintf() to fix that.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>