[PATCH] powerpc: disable OProfile for iSeries

Disable OProfile in Kconfig for iSeries to prevent hangs.  OProfile
was not originally intended to work with legacy iSeries.
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/oprofile/Kconfig

 config PROFILING
+	depends on !PPC_ISERIES
 	bool "Profiling support (EXPERIMENTAL)"
 	help
 	  Say Y here to enable the extended profiling support mechanisms used