drivers: clock control: rename Kconfig.nrf5 to Kconfig.nrf

Renaming Kconfig.nrf5 to Kconfig.nrf in the wake of extending
the use of the nRF clock control driver to both nRF5 and nRF91
SOC series.

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

drivers/clock_control/Kconfig

@@ -23,7 +23,7 @@ module = CLOCK_CONTROL
 module-str = clock control
 source "subsys/logging/Kconfig.template.log_config"
 
-source "drivers/clock_control/Kconfig.nrf5"
+source "drivers/clock_control/Kconfig.nrf"
 
 source "drivers/clock_control/Kconfig.quark_se"