mtd: nand: oxnas_nand: fix build errors on arch/um, require HAS_IOMEM

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=f0fcdc506b76e924c60fa607bba5872ca4745476
Commit:     f0fcdc506b76e924c60fa607bba5872ca4745476
Parent:     a2724663494f7313f53da10d8c0a729c5e3c4dea
Author:     Randy Dunlap <rdunlap at infradead.org>
AuthorDate: Sun Jan 1 18:58:27 2017 -0800
Committer:  Boris Brezillon <boris.brezillon at free-electrons.com>
CommitDate: Mon Jan 2 09:56:57 2017 +0100

    mtd: nand: oxnas_nand: fix build errors on arch/um, require HAS_IOMEM
    
    Fix build errors on arch/um, which does not support HAS_IOMEM,
    while the oxnas_nand.c driver uses interfaces that are
    supplied by HAS_IOMEM.
    
    (loadable module build:)
    ERROR: "devm_ioremap_resource" [drivers/mtd/nand/oxnas_nand.ko] undefined!
    or (built-in build:)
    drivers/built-in.o: In function `oxnas_nand_probe':
    drivers/mtd/nand/oxnas_nand.c:102: undefined reference to `devm_ioremap_resource'
    
    Fixes: 668592492409 ("mtd: nand: Add OX820 NAND Support")
    Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
    Reported-by: kbuild test robot <fengguang.wu at intel.com>
    Acked-by: Neil Armstrong <narmstrong at baylibre.com>
    Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
 drivers/mtd/nand/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 2f35ab5..9ce5dcb 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -426,6 +426,7 @@ config MTD_NAND_ORION
 
 config MTD_NAND_OXNAS
 	tristate "NAND Flash support for Oxford Semiconductor SoC"
+	depends on HAS_IOMEM
 	help
 	  This enables the NAND flash controller on Oxford Semiconductor SoCs.