[PATCH 4.8 069/125] staging: android ion/hisi: fix dependencies

[Greg Kroah-Hartman]

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@xxxxxxxx>

commit 4a236d01b5e0d7e6f4ee9e6c4056fce10b38e8ad upstream.

The newly added Hi6220 Ion code fails to build when the ION_OF helpers
are not present:

drivers/staging/android/ion/hisilicon/hi6220_ion.o: In function `hi6220_ion_remove':
hi6220_ion.c:(.text.hi6220_ion_remove+0x4c): undefined reference to `ion_destroy_platform_data'
drivers/staging/android/ion/hisilicon/hi6220_ion.o: In function `hi6220_ion_probe':
hi6220_ion.c:(.text.hi6220_ion_probe+0x5c): undefined reference to `ion_parse_dt'
hi6220_ion.c:(.text.hi6220_ion_probe+0xf8): undefined reference to `ion_destroy_platform_data'

This selects the symbol when needed.

Fixes: 2b40182a19bc ("staging: android: ion: Add ion driver for Hi6220 SoC platform")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Laura Abbott <labbott@xxxxxxxxxx>
Reviewed-by: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/staging/android/ion/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/staging/android/ion/Kconfig
+++ b/drivers/staging/android/ion/Kconfig
@@ -36,6 +36,7 @@ config ION_TEGRA
 config ION_HISI
 	tristate "Ion for Hisilicon"
 	depends on ARCH_HISI && ION
+	select ION_OF
 	help
 	  Choose this option if you wish to use ion on Hisilicon Platform.