ARM: shmobile: Move pm-rmobile.h, cleanup sh73xx.h

ARM: shmobile: Move pm-rmobile.h, cleanup sh73xx.h

Change location of pm-rmobile.h so it can be used as #include "pm-rmobile.h"
instead of the old style #include <mach/pm-rmobile.h>. Also clean up
the sh7372 and sh73a0 header files to get rid of unused include files.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit 6b8b0cb477b3e77721982effae3415f3c5f58fee)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>