powerpc: Disallow lparcfg being a module

The lparcfg code needs several things which are pretty arcane internal
details and which we don't want to export, which means that lparcfg
doesn't work when built as a module.  This makes it a bool instead of
a tristate in the Kconfig so that users can't try to build it as a
module.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/platforms/pseries/Kconfig

@@ -19,7 +19,7 @@ config SCANLOG
 	depends on RTAS_PROC && PPC_PSERIES
 
 config LPARCFG
-	tristate "LPAR Configuration Data"
+	bool "LPAR Configuration Data"
 	depends on PPC_PSERIES || PPC_ISERIES
 	help
 	Provide system capacity information via human readable