MAINTAINERS: Remove myself from PA Semi entries

The platform is old, very few users and I lack bandwidth to keep after
it these days.

Mark the base platform as well as the drivers as orphans, patches have
been flowing through the fallback maintainers for a while already.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

MAINTAINERS

@@ -7109,9 +7109,8 @@ F:	arch/powerpc/platforms/83xx/
 F:	arch/powerpc/platforms/85xx/
 
 LINUX FOR POWERPC PA SEMI PWRFICIENT
-M:	Olof Johansson <olof@lixom.net>
 L:	linuxppc-dev@lists.ozlabs.org
-S:	Maintained
+S:	Orphan
 F:	arch/powerpc/platforms/pasemi/
 F:	drivers/*/*pasemi*
 F:	drivers/*/*/*pasemi*
@@ -8784,15 +8783,13 @@ S:	Maintained
 F:	drivers/net/wireless/intersil/p54/
 
 PA SEMI ETHERNET DRIVER
-M:	Olof Johansson <olof@lixom.net>
 L:	netdev@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	drivers/net/ethernet/pasemi/*
 
 PA SEMI SMBUS DRIVER
-M:	Olof Johansson <olof@lixom.net>
 L:	linux-i2c@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	drivers/i2c/busses/i2c-pasemi.c
 
 PADATA PARALLEL EXECUTION MECHANISM