libutils: qsort helper for standard types

Add qsort_int(), qsort_uint(), qsort_u32() and friends as qsort() helper
functions to sort standard typed arrays.

Signed-off-by: Etienne Carriere <etienne.

libutils: qsort helper for standard types

Add qsort_int(), qsort_uint(), qsort_u32() and friends as qsort() helper
functions to sort standard typed arrays.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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