parisc: hpux - Remove hpux gateway page

Drop code to create HP-UX gateway page and syscall entry code.

Signed-off-by: Helge Deller <deller@gmx.de>

diff --cc arch/parisc/include/asm/processor.h
Simple merge

diff --cc arch/parisc/kernel/entry.S
Simple merge

diff --cc arch/parisc/kernel/process.c
Simple merge

diff --cc arch/parisc/kernel/signal.c
Simple merge

diff --cc arch/parisc/mm/init.c
Simple merge