MAINTAINERS: Unify the microcode driver section

Merge the AMD and Intel sections and generalize the file patterns.

Signed-off-by: Borislav Petkov <[e-mail]>
Cc: Andy Lutomirski <[e-mail]>
Cc: Arjan van de Ven <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Brian Gerst <[e-mail]>
Cc: Dave Jones <[e-mail]>
Cc: Denys Vlasenko <[e-mail]>
Cc: H. Peter Anvin <[e-mail]>
Cc: Len Brown <[e-mail]>
Cc: Linus Torvalds <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Rafael J. Wysocki <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Tony Luck <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

MAINTAINERS

···
 F:	drivers/gpu/drm/radeon/radeon_kfd.h
 F:	include/uapi/linux/kfd_ioctl.h
 
-AMD MICROCODE UPDATE SUPPORT
-M:	Borislav Petkov <[e-mail]>
-S:	Maintained
-F:	arch/x86/kernel/cpu/microcode/amd*
-
 AMD XGBE DRIVER
 M:	Tom Lendacky <[e-mail]>
 L:	[e-mail]
···
 W:	https://01.org/linux-acpi
 S:	Supported
 F:	drivers/platform/x86/intel_menlow.c
-
-INTEL IA32 MICROCODE UPDATE SUPPORT
-M:	Borislav Petkov <[e-mail]>
-S:	Maintained
-F:	arch/x86/kernel/cpu/microcode/core*
-F:	arch/x86/kernel/cpu/microcode/intel*
 
 INTEL I/OAT DMA DRIVER
 M:	Dave Jiang <[e-mail]>
···
 L:	[e-mail]
 S:	Maintained
 F:	arch/x86/kernel/cpu/mcheck/*
+
+X86 MICROCODE UPDATE SUPPORT
+M:	Borislav Petkov <[e-mail]>
+S:	Maintained
+F:	arch/x86/kernel/cpu/microcode/*
 
 X86 VDSO
 M:	Andy Lutomirski <[e-mail]>