ARM: dts: lpc32xx: fix ARM PrimeCell LCD controller clocks property

The originally added ARM PrimeCell PL111 clocks property misses
the required "clcdclk" clock, which is the same as a clock to enable
the LCD controller on NXP LPC3230 and NXP LPC3250 SoCs.

Fixes: 93898eb7

 ("arm: dts: lpc32xx: add clock properties to device nodes")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>