Commit a6485b2b

 ("refactor(delay-timer): add timer callback
functions") introduced a requirement for timer-related APIs
to have a timer object initialized before use. This caused
assertion failures in SMMU routines on Neoverse platforms,
as they relied on timer APIs.

Resolve this issue by initializing the timer early during
platform boot to set up the timer_ops object properly.

Change-Id: I3d9ababdb7897185f23e9ccf982b9aab6c666b8c
Signed-off-by: Sammit Joshi <sammit.joshi@arm.com>