hppa: do not set IPC_64 for the SysV IPC *ctl commands
parisc does not select ARCH_WANT_IPC_PARSE_VERSION, so its kernel never
strips the IPC_64 (0x100) bit from the command argument of semctl/msgctl/
shmctl; passing it leaves an unrecognised command and the call fails with
EINVAL. uClibc gave hppa __IPC_64 = 0x100 (__ARCH_HAS_DEPRECATED_SYSCALLS__
&& __WORDSIZE == 32), breaking e.g. semctl(IPC_STAT) and the sem test.
Define __IPC_64 as 0x0 for hppa, like the asm-generic targets.
Verified with test/misc/sem under qemu-system-hppa.
Signed-off-by: Ramin Moussavi <ramin.moussavi@yacoub.de>