ARM: SPEAr: Update MAINTAINERS entries

This merges few entries for the SPEAr platform as separate entries
aren't really required.

Moreover it adds soc@kernel.org as 'M' entry, to let them be cc'd for
patches, since they only pickup the patches for SPEAr directly due to
very low traffic for the same.
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

MAINTAINERS

@@ -14860,13 +14860,6 @@ L:	linux-omap@vger.kernel.org
 S:	Maintained
 F:	drivers/pinctrl/pinctrl-single.c
 
-PIN CONTROLLER - ST SPEAR
-M:	Viresh Kumar <vireshk@kernel.org>
-L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:	Maintained
-W:	http://www.st.com/spear
-F:	drivers/pinctrl/spear/
-
 PKTCDVD DRIVER
 M:	linux-block@vger.kernel.org
 S:	Orphan
@@ -17632,21 +17625,17 @@ W:	https://github.com/linux-speakup/speakup
 B:	https://github.com/linux-speakup/speakup/issues
 F:	drivers/accessibility/speakup/
 
-SPEAR CLOCK FRAMEWORK SUPPORT
-M:	Viresh Kumar <vireshk@kernel.org>
-L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:	Maintained
-W:	http://www.st.com/spear
-F:	drivers/clk/spear/
-
-SPEAR PLATFORM SUPPORT
+SPEAR PLATFORM/CLOCK/PINCTRL SUPPORT
 M:	Viresh Kumar <vireshk@kernel.org>
 M:	Shiraz Hashim <shiraz.linux.kernel@gmail.com>
+M:	soc@kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 W:	http://www.st.com/spear
 F:	arch/arm/boot/dts/spear*
 F:	arch/arm/mach-spear/
+F:	drivers/clk/spear/
+F:	drivers/pinctrl/spear/
 
 SPI NOR SUBSYSTEM
 M:	Tudor Ambarus <tudor.ambarus@microchip.com>