soc: nxp: lpc: Kconfig: imply clock control instead of selecting

For most builds, CONFIG_CLOCK_CONTROL is still required. However, for
simple applications that only use UART on the lpcxpresso55s69, it is now
possible to build with CONFIG_CLOCK_CONTROL=n and run the application as
expected. Move to implying this symbol so applications can opt to
disable it.

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

Author: danieldegrasse

soc/nxp/lpc/Kconfig

@@ -3,7 +3,7 @@
 
 config SOC_FAMILY_LPC
 	select HAS_SEGGER_RTT if ZEPHYR_SEGGER_MODULE
-	select CLOCK_CONTROL
+	imply CLOCK_CONTROL
 	select ARM
 
 if SOC_FAMILY_LPC