[PATCH v5 1/6] log: correct CONFIG_LOG_TEST prerequisites

[sjg at google.com]

An error

	undefined reference to `do_log_test'

occurs for CONFIG_CMD_LOG=y, CONFIG_LOG_TEST=y, CONGIG_UNIT_TEST=n

Make CONFIG_UNIT_TEST a prerequisite.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
v5:
	no change
v4:
	no change
---
 common/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Applied to u-boot-dm, thanks!