ppc64: Minor compilation fixes

This defines CONFIG_PPC_STD_MMU for ppc64, changes an instance of
sys32_ to compat_sys_ in the ppc64 syscall table, and removes a
reference to a non-existent arch/powerpc/xmon/Makefile.
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Makefile

@@ -131,7 +131,7 @@ core-y				+= arch/powerpc/kernel/ \
 				   arch/powerpc/sysdev/ \
 				   arch/powerpc/platforms/
 core-$(CONFIG_MATH_EMULATION)	+= arch/ppc/math-emu/
-core-$(CONFIG_XMON)		+= arch/powerpc/xmon/
+#core-$(CONFIG_XMON)		+= arch/powerpc/xmon/
 core-$(CONFIG_APUS)		+= arch/ppc/amiga/
 drivers-$(CONFIG_8xx)		+= arch/ppc/8xx_io/
 drivers-$(CONFIG_4xx)		+= arch/ppc/4xx_io/

arch/ppc64/Kconfig

@@ -10,6 +10,9 @@ config MMU
 	bool
 	default y
 
+config PPC_STD_MMU
+	def_bool y
+
 config UID16
 	bool
 

arch/ppc64/kernel/misc.S

@@ -1038,7 +1038,7 @@ _GLOBAL(sys_call_table32)
 	.llong .compat_sys_wait4
 	.llong .sys_swapoff		/* 115 */
 	.llong .compat_sys_sysinfo
-	.llong .compat_sys_ipc
+	.llong .sys32_ipc
 	.llong .sys_fsync
 	.llong .ppc32_sigreturn
 	.llong .ppc_clone		/* 120 */
@@ -1166,7 +1166,7 @@ _GLOBAL(sys_call_table32)
 	.llong .compat_sys_timer_gettime
 	.llong .sys_timer_getoverrun
 	.llong .sys_timer_delete
-	.llong .compat_sys_clock_settime	/* 245 */
+	.llong .compat_sys_clock_settime/* 245 */
 	.llong .compat_sys_clock_gettime
 	.llong .compat_sys_clock_getres
 	.llong .compat_sys_clock_nanosleep