MIPS: Select HAVE_REGS_AND_STACK_ACCESS_API

Add lost Kconfig symbol.  This should have been part of 40e084a506eb
('MIPS: Add uprobes support.').

Fixes: 40e084a506eb ('MIPS: Add uprobes support.')
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -65,6 +65,7 @@ config MIPS
 	select ARCH_CLOCKSOURCE_DATA
 	select HANDLE_DOMAIN_IRQ
 	select HAVE_EXIT_THREAD
+	select HAVE_REGS_AND_STACK_ACCESS_API
 
 menu "Machine selection"