Nuvoton: Support DAC HAL

[ccli8]

Description

This PR adds support for DAC (analog-out) HAL on Nuvoton tagets.

Support targets

• NUMAKER_PFM_NANO130
• NUMAKER_PFM_M453
• NUMAKER_PFM_M487/NUMAKER_IOT_M487
• NUMAKER_PFM_M2351

Pull request type

[ ] Fix
[ ] Refactor
[X] Target update
[ ] Functionality change
[ ] Docs update
[ ] Test update
[ ] Breaking change

[ccli8]

Test reports of ci-test-shield/analog-out test on NANO130/M453 targets are listed below. M487/M2351 are not listed because their DAC pinout collide with USB VCOM Tx/Rx and cannot run this test. They are tested separately.

+-------------------------+---------------------+---------------------+-------------------+--------+--------+--------+--------------------+
| target                  | platform_name       | test suite          | test case         | passed | failed | result | elapsed_time (sec) |
+-------------------------+---------------------+---------------------+-------------------+--------+--------+--------+--------------------+
| NUMAKER_PFM_NANO130-ARM | NUMAKER_PFM_NANO130 | tests-api-analogout | AnalogOut on AOUT | 1      | 0      | OK     | 0.06               |
+-------------------------+---------------------+---------------------+-------------------+--------+--------+--------+--------------------+
mbedgt: test case results: 1 OK

+----------------------+------------------+---------------------+-------------------+--------+--------+--------+--------------------+
| target               | platform_name    | test suite          | test case         | passed | failed | result | elapsed_time (sec) |
+----------------------+------------------+---------------------+-------------------+--------+--------+--------+--------------------+
| NUMAKER_PFM_M453-ARM | NUMAKER_PFM_M453 | tests-api-analogout | AnalogOut on AOUT | 1      | 0      | OK     | 0.05               |
+----------------------+------------------+---------------------+-------------------+--------+--------+--------+--------------------+
mbedgt: test case results: 1 OK

[cyliangtw]

get_modinit(...) can't return modinit object with modname != obj->dac.
So, MBED_ASSERT(modinit->modname == obj->dac) is redundancy.

[ccli8]

@cyliangtw This is to check the flow PinMap_DAC/dac_modinit_tab/get_modinit is bug-less, like error in any of them, in development time. Anyway, MBED_ASSERT is removed in release build.

[0xc0170]

Can you fix the year (2018 for this new file) ?

[0xc0170]

Also add SPDX identifier please

[ccli8]

@0xc0170 I fixed them in e24a3c0.

[0xc0170]

Code looks fine to me, just fixing the license headers

[cmonr]

CI started.

[mbed-ci]

Test run: SUCCESS

Summary: 4 of 4 test jobs passed
Build number : 1
Build artifacts
Build logs