kselftests/ir : Improve readability of modprobe error message

Improve the readability of error message which says module not found.
The new behaviour is consistent with the modprobe command.

Signed-off-by: Gautam Menghani <gautammenghani201@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
1 file changed