drivers: mipi_dbi: mipi_dbi_nxp_lcdic: allow config of timer bases

The NXP LCDIC peripheral contains two internal timers, with configurable
periods. These times are used to determine delays within the peripheral,
such as the reset and tearing enable signal delays. Allow these periods
to be set within the devicetree for the peripheral.

Raise the period where required for display drivers that need a value
other than the reset setting

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>