feat(amd): add test for pll EEMI APIs

Add test for pll EEMI APIs within the TF-A test
framework. The purpose of this test is to validate
functionality and reliability of various pll operations

Test cover the following EEMI APIs:
- xpm_pll_set_parameter
- xpm_pll_get_parameter
- xpm_pll_get_mode
- xpm_pll_set_mode

Change-Id: I1a2c88edc247dd4783ed52bc7e731b1d18b139e9
Signed-off-by: Madhav Bhatt <madhav.bhatt@amd.com>
5 files changed