mfd: intel_msic: Remove driver for deprecated platform

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run more or less fresh kernel on it. Commit
05f4434 ("ASoC: Intel: remove mfld_machine") is also in align
with this theory.

Due to above and to reduce a burden of supporting outdated drivers,
remove the support for outdated platforms completely.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

MAINTAINERS

@@ -9098,9 +9098,7 @@ F:	drivers/gpio/gpio-*cove.c
 INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
 M:	Andy Shevchenko <andy@kernel.org>
 S:	Maintained
-F:	drivers/mfd/intel_msic.c
 F:	drivers/mfd/intel_soc_pmic*
-F:	include/linux/mfd/intel_msic.h
 F:	include/linux/mfd/intel_soc_pmic*
 
 INTEL PMT DRIVER

arch/x86/include/asm/intel_scu_ipc_legacy.h

@@ -16,24 +16,12 @@
 
 /* Don't call these in new code - they will be removed eventually */
 
-/* Read single register */
-static inline int intel_scu_ipc_ioread8(u16 addr, u8 *data)
-{
-	return intel_scu_ipc_dev_ioread8(NULL, addr, data);
-}
-
 /* Read a vector */
 static inline int intel_scu_ipc_readv(u16 *addr, u8 *data, int len)
 {
 	return intel_scu_ipc_dev_readv(NULL, addr, data, len);
 }
 
-/* Write single register */
-static inline int intel_scu_ipc_iowrite8(u16 addr, u8 data)
-{
-	return intel_scu_ipc_dev_iowrite8(NULL, addr, data);
-}
-
 /* Write a vector */
 static inline int intel_scu_ipc_writev(u16 *addr, u8 *data, int len)
 {

drivers/mfd/Kconfig

@@ -659,15 +659,6 @@ config MFD_INTEL_LPSS_PCI
 	  I2C, SPI and HS-UART starting from Intel Sunrisepoint (Intel Skylake
 	  PCH) in PCI mode.
 
-config MFD_INTEL_MSIC
-	bool "Intel MSIC"
-	depends on INTEL_SCU
-	select MFD_CORE
-	help
-	  Select this option to enable access to Intel MSIC (Avatele
-	  Passage) chip. This chip embeds audio, battery, GPIO, etc.
-	  devices used in Intel Medfield platforms.
-
 config MFD_INTEL_PMC_BXT
 	tristate "Intel PMC Driver for Broxton"
 	depends on X86

drivers/mfd/Makefile

@@ -214,7 +214,6 @@ obj-$(CONFIG_MFD_ATMEL_SMC)	+= atmel-smc.o
 obj-$(CONFIG_MFD_INTEL_LPSS)	+= intel-lpss.o
 obj-$(CONFIG_MFD_INTEL_LPSS_PCI)	+= intel-lpss-pci.o
 obj-$(CONFIG_MFD_INTEL_LPSS_ACPI)	+= intel-lpss-acpi.o
-obj-$(CONFIG_MFD_INTEL_MSIC)	+= intel_msic.o
 obj-$(CONFIG_MFD_INTEL_PMC_BXT)	+= intel_pmc_bxt.o
 obj-$(CONFIG_MFD_INTEL_PMT)	+= intel_pmt.o
 obj-$(CONFIG_MFD_PALMAS)	+= palmas.o