sh: fix recursive dependency in Kconfig

When executing:

   make ARCH=sh defconfig

kconfig segfaulted.
kconfig should obviously not segfault.

But this indicated a problem in the sh files which was
tracked down to a recursive dependency.

We select HAVE_HW_BREAKPOINT and in the following line
we use the same symbol in an expression.
Drop the conditional as it is of no use.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -46,7 +46,7 @@ config SUPERH32
 	select HAVE_ARCH_KGDB
 	select HAVE_HW_BREAKPOINT
 	select HAVE_MIXED_BREAKPOINTS_REGS
-	select PERF_EVENTS if HAVE_HW_BREAKPOINT
+	select PERF_EVENTS
 	select ARCH_HIBERNATION_POSSIBLE if MMU
 
 config SUPERH64