refactor(sdei): refactor SDEI test to align with new SPSR config

Modified sdei_event_check_pstate() to align with the updated
SPSR configuration procedure which uses the create_spsr()
API.

Change-Id: I7723657117a8c64762acdbb410ad535058c97e9d
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
1 file changed