sh: Make all PxSEGADDR() calls fatal for non-legacy configs.

This stubs out all of the PxSEGADDR() wrappers for non-legacy code.
29-bit will continue to work with these, while 32-bit code will now blow
up on compile rather than at runtime.

The vast majority of the in-tree offenders are gone, with the only
remaining culprits being unable to support 32-bit mode.

Hopefully this will prevent anyone from ever using these again.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/addrspace.h

@@ -40,7 +40,15 @@
 	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P3SEG))
 #define P4SEGADDR(a)	\
 	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P4SEG))
-#endif /* 29BIT */
+#else
+/*
+ * These will never work in 32-bit, don't even bother.
+ */
+#define P1SEGADDR(a)	__futile_remapping_attempt
+#define P2SEGADDR(a)	__futile_remapping_attempt
+#define P3SEGADDR(a)	__futile_remapping_attempt
+#define P4SEGADDR(a)	__futile_remapping_attempt
+#endif
 #endif /* P1SEG */
 
 /* Check if an address can be reached in 29 bits */