drm/radeon: Prefer strscpy over strlcpy in 'radeon_combios_get_power_modes'

strlcpy() reads the entire source buffer first. This read may exceed the
destination size limit. This is both inefficient and can lead to linear
read overflows if a source string is not NUL-terminated. The safe
replacement is strscpy() [1].

cleanup to remove the strlcpy() function entirely from the kernel [2].

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89



Fixes the following:

WARNING: Prefer strscpy over strlcpy
+                               strlcpy(info.type, name, sizeof(info.type));

WARNING: Prefer strscpy over strlcpy
+                               strlcpy(info.type, name, sizeof(info.type));

Cc: Guchun Chen <guchun.chen@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>