ARM: exynos: enable multiplatform support

This makes it possible to enable the exynos platform as part of a
multiplatform kernel, in addition to keeping the single-platform
exynos support.

The multiplatform variant has a number of limitations at the moment:

* It only supports DT-enabled machines. This is not a problem in
  the long run, as non-DT machines for exynos are going away.
  The main problem here is that the gpio code and the exynos_eint
  irqchip are not multiplatform capable but still required for
  ATAGS based boot.
* The watchdog driver is still missing a conversion.
* sparsemem and memory_holes are currently not supported in
  multiplatform.

The the multiplatform aware ARCH_EXYNOS Kconfig symbol is disabled
for now, as dependent patches are still pending in other
subsystem trees. We will enable it once everything comes together.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h
index f6fcadeee969..266a4e3e2458 100644
--- a/arch/arm/plat-samsung/include/plat/pm.h
+++ b/arch/arm/plat-samsung/include/plat/pm.h
@@ -166,6 +166,7 @@ extern void s3c_pm_check_store(void);
  */
 extern void s3c_pm_configure_extint(void);
 
+#ifdef CONFIG_PLAT_SAMSUNG_SINGLE
 /**
  * samsung_pm_restore_gpios() - restore the state of the gpios after sleep.
  *
@@ -181,6 +182,10 @@ extern void samsung_pm_restore_gpios(void);
  * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios().
  */
 extern void samsung_pm_save_gpios(void);
+#else
+#define samsung_pm_restore_gpios()	do { } while(0)
+#define samsung_pm_save_gpios()		do { } while(0)
+#endif
 
 extern void s3c_pm_save_core(void);
 extern void s3c_pm_restore_core(void);