drivers: i2c: 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/i2s/Kconfig

@@ -10,7 +10,6 @@
 menuconfig I2S
 	bool
 	prompt "I2S bus drivers"
-	default n
 	help
 	  Enable support for the I2S (Inter-IC Sound) hardware bus.
 

drivers/i2s/Kconfig.cavs

@@ -9,7 +9,6 @@ menuconfig I2S_CAVS
 	bool "Intel I2S (SSP) Bus Driver"
 	depends on BOARD_INTEL_S1000_CRB
 	select DMA
-	default n
 	help
 	  Enable Inter Sound (I2S) bus driver for Intel_S1000 based on
 	  Synchronous Serial Port (SSP) module.

drivers/i2s/Kconfig.sam_ssc

@@ -9,7 +9,6 @@ menuconfig I2S_SAM_SSC
 	bool "Atmel SAM MCU family I2S (SSC) Bus Driver"
 	depends on SOC_FAMILY_SAM
 	select DMA
-	default n
 	help
 	  Enable Inter Sound (I2S) bus driver for Atmel SAM MCU family based on
 	  Synchronous Serial Controller (SSC) module.