ARM: lh7a40x: remove unmaintained platform support

lh7a40x has only been receiving updates for updates to generic code.
The last involvement from the maintainer according to the git logs was
in 2006.  As such, it is a maintainence burden with no benefit.

This gets rid of two defconfigs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/usb/host/ohci.h

@@ -575,18 +575,8 @@ static inline void _ohci_writel (const struct ohci_hcd *ohci,
 #endif
 }
 
-#ifdef CONFIG_ARCH_LH7A404
-/* Marc Singer: at the time this code was written, the LH7A404
- * had a problem reading the USB host registers.  This
- * implementation of the ohci_readl function performs the read
- * twice as a work-around.
- */
-#define ohci_readl(o,r)		(_ohci_readl(o,r),_ohci_readl(o,r))
-#define ohci_writel(o,v,r)	_ohci_writel(o,v,r)
-#else
 #define ohci_readl(o,r)		_ohci_readl(o,r)
 #define ohci_writel(o,v,r)	_ohci_writel(o,v,r)
-#endif
 
 
 /*-------------------------------------------------------------------------*/