The CNTFRQ already has a CNTBASEN_ prefix.
To be able to use CNTP_CTL from CP15, the CNTP_CTL define is renamed
CNTBASEN_CNTP_CTL.
To keep consistency, CNTPCT_LO and CNTP_CVAL_LO are also prefixed.

Change-Id: Ie328daa694a708130ee369218b57c0f4b08f7f44
Signed-off-by: Yann Gautier <yann.gautier@st.com>