uml: fix hppfs build

Make HoneyPot ProcFS depend on CONFIG_PROC_FS so that it will build.
Recommended by Christoph Hellwig.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=33692

Reported-by: Simon Danner <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: rddunlap

arch/um/Kconfig.um

@@ -47,7 +47,7 @@ config HOSTFS
 
 config HPPFS
 	tristate "HoneyPot ProcFS (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
+	depends on EXPERIMENTAL && PROC_FS
 	help
 	  hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc
 	  entries to be overridden, removed, or fabricated from the host.