MAINTAINERS: Add Andy and Darren as arch/x86/platform/ reviewers

... so that they can get CCed on platform patches.

Signed-off-by: Borislav Petkov <[e-mail]>
Acked-by: Andy Shevchenko <[e-mail]>
Acked-by: Thomas Gleixner <[e-mail]>
Cc: Darren Hart <[e-mail]>
Cc: Andy Shevchenko <[e-mail]>
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]

MAINTAINERS

···
 F:	drivers/platform/x86/
 F:	drivers/platform/olpc/
 
+X86 PLATFORM DRIVERS - ARCH
+R:	Darren Hart <[e-mail]>
+R:	Andy Shevchenko <[e-mail]>
+L:	[e-mail]
+L:	[e-mail]
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/core
+S:	Maintained
+F:	arch/x86/platform
+
 X86 VDSO
 M:	Andy Lutomirski <[e-mail]>
 L:	[e-mail]