ltp: Add patch for string formatting security warning
A revamp of the syscalls/setregid tests made to use a new
library [LTP:
7a1b4427] required a conversion to test messages.
This test in particular did not include a formatted string,
but a just a string element:
testcases/kernel/syscalls/setregid/setregid01.c
This patch allows LTP to be built with -Wformat,
-Wformat-security, and -Werror=format-security.
Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
