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H A Dsystem.c953707a45041ea13dfac569faa90666005802ea1 Wed Jun 21 07:14:04 UTC 2023 Seonghyun Park <seonghp@amazon.com> core: use user-access functions in system PTA

When user TAs call into the system PTA, allocate bounce buffers and
copy data from the user buffers to the bounce buffers, which can be
accessed by the core kernel functions.

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