MAINTAINERS: Merge the two e500 sections

There is currently a "e500" machine section and a "ppce500" device
section in the maintainers file - with some oddities: The wildcard
in the device section also covers the files from the machine section.
And hw/pci-host/ppce500.c is in the device section, while its header
is in the machine section.
This is really quite confusing, and I don't see a reason why we really
need two sections here, so let's simply merge them.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

MAINTAINERS

@@ -960,9 +960,10 @@ e500
 M: David Gibson <david@gibson.dropbear.id.au>
 L: qemu-ppc@nongnu.org
 S: Odd Fixes
-F: hw/ppc/e500.[hc]
-F: hw/ppc/e500plat.c
+F: hw/ppc/e500*
 F: hw/gpio/mpc8xxx.c
+F: hw/net/fsl_etsec/
+F: hw/pci-host/ppce500.c
 F: include/hw/ppc/ppc_e500.h
 F: include/hw/pci-host/ppce500.h
 F: pc-bios/u-boot.e500
@@ -1319,14 +1320,6 @@ F: hw/i2c/ppc4xx_i2c.c
 F: include/hw/ppc/ppc4xx.h
 F: include/hw/i2c/ppc4xx_i2c.h
 
-ppce500
-M: David Gibson <david@gibson.dropbear.id.au>
-L: qemu-ppc@nongnu.org
-S: Odd Fixes
-F: hw/ppc/e500*
-F: hw/pci-host/ppce500.c
-F: hw/net/fsl_etsec/
-
 Character devices
 M: Marc-André Lureau <marcandre.lureau@redhat.com>
 R: Paolo Bonzini <pbonzini@redhat.com>