drivers/gpio: fix potential issue which cause by enabling pull-up/pul…

…l-down.

For PIO3 enabling the pull-down resistor while the pull-up resistor is still enabled is not possible. Likewise, enabling the pull-up resistor while the pull-down resistor is still enabled is not possible.

Signed-off-by: Jeff Lin <min.lin@microchip.com>

prepare for release 2.16: update version, ChangeLog.md

Signed-off-by: Tony Han <tony.han@microchip.com>

examples/crypto_sha: fix warning and update documentation

Signed-off-by: Aubin Constans <aubin.constans@microchip.com>

examples/crypto_aes: update testing.md file for aes test

Signed-off-by: Jeff Lin <min.lin@microchip.com>

prepare for release 2.13: update version, ChangeLog.md and softpack.md

Signed-off-by: Tony Han <tony.han@microchip.com>

prepare for release 2.12: update version, ChangeLog.md and softpack.md

Signed-off-by: Tony Han <tony.han@microchip.com>

prepare for release 2.11: update version, ChangeLog.md and softpack.md

Signed-off-by: Tony Han <tony.han@microchip.com>

prepare for release 2.10: update version and ChangeLog.md

Signed-off-by: Loic Lefort <loic.lefort@microchip.com>

release 2.9: update the version, ChangeLog.md

Signed-off-by: Tony Han <tony.han@microchip.com>

release v2.8

Signed-off-by: Loic Lefort <loic.lefort@atmel.com>