platform:x86: Add Intel telemetry platform driver

BugLink: http://bugs.launchpad.net/bugs/1520457

Telemetry platform driver implements the telemetry interfaces.
Currently it supports ApolloLake. It uses the PUNIT and PMC IPC
interfaces to configure the telemetry samples to read.
The samples are read from a Secure SRAM region.
Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
(cherry picked from commit 9d16b482)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

MAINTAINERS

@@ -5719,6 +5719,7 @@ L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
 F:	drivers/platform/x86/intel_telemetry_core.c
 F:	arch/x86/include/asm/intel_telemetry.h
+F:	drivers/platform/x86/intel_telemetry_pltdrv.c
 
 IOC3 ETHERNET DRIVER
 M:	Ralf Baechle <ralf@linux-mips.org>

drivers/platform/x86/Makefile

@@ -63,4 +63,5 @@ obj-$(CONFIG_ALIENWARE_WMI)	+= alienware-wmi.o
 obj-$(CONFIG_INTEL_PMC_IPC)	+= intel_pmc_ipc.o
 obj-$(CONFIG_SURFACE_PRO3_BUTTON)	+= surfacepro3_button.o
 obj-$(CONFIG_INTEL_PUNIT_IPC)  += intel_punit_ipc.o
-obj-$(CONFIG_INTEL_TELEMETRY)	+= intel_telemetry_core.o
+obj-$(CONFIG_INTEL_TELEMETRY)	+= intel_telemetry_core.o \
+				   intel_telemetry_pltdrv.o