MAINTAINERS: Add Julius as ARM architecture maintainer

I'm pretty much already doing this anyway, so I might as well document
it. Separating out some older ARM SoCs that were added by other people
and are pretty much orphaned now.

I can also fill out the MISSING: MEMLAYOUT point (since I wrote that).

Change-Id: I8b78d592a1ed68a42e5785ebdc13df2edf9007bf
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/20137
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>

MAINTAINERS

@@ -316,24 +316,29 @@ F:	src/arch/x86/acpi/
 F:	util/acpi/
 
 ARM ARCHITECTURE
+M:	Julius Werner <jwerner@chromium.org>
+S:	Supported
 F:	src/arch/arm/
-F:	src/arch/arm64
+F:	src/arch/arm64/
+F:	src/soc/mediatek/
+F:	src/soc/nvidia/
+F:	src/soc/rockchip/
+F:	util/nvidia/
+F:	util/rockchip/
+
+ORPHANED ARM SOCS
+S:	Orphaned
 F:	src/cpu/allwinner/
 F:	src/cpu/armltd/
-F:	src/cpu/samsung/
 F:	src/cpu/ti/
 F:	src/soc/broadcom/
 F:	src/soc/marvell/
-F:	src/soc/nvidia/
 F:	src/soc/qualcomm/
-F:	src/soc/rockchip/
 F:	src/soc/samsung/
 F:	util/arm_boot_tools/
 F:	util/broadcom/
 F:	util/exynos/
 F:	util/ipqheader/
-F:	util/nvidia/
-F:	util/rockchip/
 
 MIPS ARCHITECTURE
 F:	src/arch/mips/
@@ -497,12 +502,16 @@ S:	Maintained
 F:	src/superio/
 F:	util/superiotool/
 
+MEMLAYOUT
+M:	Julius Werner <jwerner@chromium.org>
+S:	Supported
+F:	*/memlayout.h
+F:	*.ld
+
 MISSING: TIMERS / DELAYS
 
 MISSING: TIMESTAMPS
 
-MISSING: MEMLAYOUT
-
 MISSING: FMAP
 
 MISSING: GPIO