Implement and use new parsers of sched_rr_get_interval syscall

Implement and use new parsers of sched_rr_get_interval syscall

* sched.c (SYS_FUNC(sched_rr_get_interval)): Remove.
[HAVE_ARCH_TIME32_SYSCALLS] (SYS_FUNC(sched_rr_get_interval_time32)):
New function.
* linux/64/syscallent.h: Replace SEN(sched_rr_get_interval) with
SEN(sched_rr_get_interval_time64).
* linux/alpha/syscallent.h: Likewise.
* linux/ia64/syscallent.h: Likewise.
* linux/mips/syscallent-n64.h: Likewise.
* linux/powerpc64/syscallent.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/sparc64/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/32/syscallent.h: Replace SEN(sched_rr_get_interval) with
SEN(sched_rr_get_interval_time32).
* linux/arm/syscallent.h: Likewise.
* linux/avr32/syscallent.h: Likewise.
* linux/bfin/syscallent.h: Likewise.
* linux/hppa/syscallent.h: Likewise.
* linux/i386/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-o32.h: Likewise.
* linux/powerpc/syscallent.h: Likewise.
* linux/s390/syscallent.h: Likewise.
* linux/sh/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* linux/xtensa/syscallent.h: Likewise.