i2c: Drop unused efm32 bus driver

Support for this machine was just removed, so drop the now unused i2c
bus driver, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/busses/Kconfig

@@ -586,13 +586,6 @@ config I2C_DIGICOLOR
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-digicolor.
 
-config I2C_EFM32
-	tristate "EFM32 I2C controller"
-	depends on ARCH_EFM32 || COMPILE_TEST
-	help
-	  This driver supports the i2c block found in Energy Micro's EFM32
-	  SoCs.
-
 config I2C_EG20T
 	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) I2C"
 	depends on PCI && (X86_32 || MIPS || COMPILE_TEST)

drivers/i2c/busses/Makefile

@@ -58,7 +58,6 @@ i2c-designware-platform-$(CONFIG_I2C_DESIGNWARE_BAYTRAIL) += i2c-designware-bayt
 obj-$(CONFIG_I2C_DESIGNWARE_PCI)			+= i2c-designware-pci.o
 i2c-designware-pci-y					:= i2c-designware-pcidrv.o
 obj-$(CONFIG_I2C_DIGICOLOR)	+= i2c-digicolor.o
-obj-$(CONFIG_I2C_EFM32)		+= i2c-efm32.o
 obj-$(CONFIG_I2C_EG20T)		+= i2c-eg20t.o
 obj-$(CONFIG_I2C_EMEV2)		+= i2c-emev2.o
 obj-$(CONFIG_I2C_EXYNOS5)	+= i2c-exynos5.o