parisc: use generic atomic64 on 32-bit

Somewhat redundant since our atomic_t uses hashed-locks on 32-bit
anyway... Maybe we can clean those up to be generic too someday.
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>

arch/parisc/Kconfig

@@ -17,6 +17,7 @@ config PARISC
 	select INIT_ALL_POSSIBLE
 	select BUG
 	select HAVE_PERF_COUNTERS
+	select GENERIC_ATOMIC64 if !64BIT
 	help
 	  The PA-RISC microprocessor is designed by Hewlett-Packard and used
 	  in many of their workstations & servers (HP9000 700 and 800 series,

arch/parisc/include/asm/atomic.h

@@ -336,7 +336,11 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
 
-#endif /* CONFIG_64BIT */
+#else /* CONFIG_64BIT */
+
+#include <asm-generic/atomic64.h>
+
+#endif /* !CONFIG_64BIT */
 
 #include <asm-generic/atomic-long.h>