In commit 70407df8c2 ("fix(build): don't call enable_language() before
proje.."), the C standard preferences were mistakenly changed to
`set(preferred_c_versions gnu99 gnu17 gnu11 gnu99)`. This was likely an
oversight from my testing. This corrects the C standard preferences to
the intended order.
Fixes: 70407df8c2 ("fix(build): don't call enable_language() before proje..")
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>