drivers: entropy: Kconfig: Remove redundant 'default n' properties

Bool symbols implicitly default to 'n'.

A 'default n' can make sense e.g. in a Kconfig.defconfig file, if you
want to override a 'default y' on the base definition of the symbol. It
isn't used like that on any of these symbols though, and is
inconsistent.

This will make the auto-generated Kconfig documentation have "No
defaults. Implicitly defaults to n." as well, which is clearer than
'default n if ...'

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>

drivers/entropy/Kconfig

@@ -9,7 +9,6 @@
 menuconfig ENTROPY_GENERATOR
 	bool
 	prompt "Entropy Drivers"
-	default n
 	help
 	  Include entropy drivers in system config.
 
@@ -23,7 +22,6 @@ source "drivers/entropy/Kconfig.native_posix"
 
 config ENTROPY_HAS_DRIVER
 	bool
-	default n
 	help
 	  This is an option to be enabled by individual entropy driver
 	  to signal that there is a true entropy driver.

drivers/entropy/Kconfig.esp32

@@ -7,7 +7,6 @@
 config ENTROPY_ESP32_RNG
 	bool "ESP32 entropy number generator driver"
 	depends on ENTROPY_GENERATOR && SOC_ESP32
-	default n
 	select ENTROPY_HAS_DRIVER
 	help
 	  This option enables the entropy number generator for ESP32 SoCs.

drivers/entropy/Kconfig.mcux

@@ -7,7 +7,6 @@
 menuconfig ENTROPY_MCUX_RNGA
 	bool "MCUX RNGA driver"
 	depends on ENTROPY_GENERATOR && HAS_MCUX_RNGA
-	default n
 	select ENTROPY_HAS_DRIVER
 	help
 	  This option enables the random number generator accelerator (RNGA)
@@ -16,7 +15,6 @@ menuconfig ENTROPY_MCUX_RNGA
 menuconfig ENTROPY_MCUX_TRNG
 	bool "MCUX TRNG driver"
 	depends on ENTROPY_GENERATOR && HAS_MCUX_TRNG
-	default n
 	select ENTROPY_HAS_DRIVER
 	help
 	  This option enables the true random number generator (TRNG)

drivers/entropy/Kconfig.native_posix

@@ -2,7 +2,6 @@
 menuconfig FAKE_ENTROPY_NATIVE_POSIX
 	bool "Native posix entropy driver"
 	depends on ENTROPY_GENERATOR && ARCH_POSIX
-	default n
 	select ENTROPY_HAS_DRIVER
 	help
 	  This option enables the test random number generator for the

drivers/entropy/Kconfig.stm32

@@ -8,7 +8,6 @@ menuconfig ENTROPY_STM32_RNG
 	bool "STM32 RNG driver"
 	depends on SOC_FAMILY_STM32
 	depends on ENTROPY_GENERATOR
-	default n
 	select ENTROPY_HAS_DRIVER
 	select USE_STM32_LL_RNG
 	help