fix(morello): initialise CNTFRQ in Non Secure CNTBaseN
fix(morello): initialise CNTFRQ in Non Secure CNTBaseN

Morello exhibits the behavior similar to Juno wherein CNTBaseN.CNTFRQ
can be written but does not reflect the value of the CNTFRQ register
in CNTCTLBase frame. This doesn't follow ARM ARM in that the value
updated in CNTCTLBase.CNTFRQ is not reflected in CNTBaseN.CNTFRQ.

Hence enable the workaround (applied to Juno) for Morello that updates
the CNTFRQ register in the Non Secure CNTBaseN frame.

Change-Id: Iabe53bf3c25152052107e08321323e4bde5fbef4
Signed-off-by: Manoj Kumar <5b18b810c11cf25bc84f6e08dba238203d021a5f@arm.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware