lib: sbi: Save context for all non-retentive suspend types

Instead of saving context only for default non-retentive suspend,
we should save context for all non-retentive suspend types.

Fixes: 74756891 ("lib: sbi: Implement SBI HSM suspend function")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
Reviewed-by: Xiang W <wxjstz@126.com>