remove ioremap_nocache and devm_ioremap_nocache

ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

scripts/coccinelle/free/devm_free.cocci

@@ -51,8 +51,6 @@ expression x;
  x = devm_request_irq(...)
 |
  x = devm_ioremap(...)
-|
- x = devm_ioremap_nocache(...)
 |
  x = devm_ioport_map(...)
 )
@@ -84,8 +82,6 @@ position p;
  x = request_irq(...)
 |
  x = ioremap(...)
-|
- x = ioremap_nocache(...)
 |
  x = ioport_map(...)
 )

scripts/coccinelle/free/iounmap.cocci

@@ -23,7 +23,7 @@ int ret;
 position p1,p2,p3;
 @@
 
-e = \(ioremap@p1\|ioremap_nocache@p1\)(...)
+e = \(ioremap@p1\)(...)
 ... when != iounmap(e)
 if (<+...e...+>) S
 ... when any