mtd: rawnand: sharpsl: Allow selection of this driver when COMPILE_TEST=y

It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_PXA enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/Kconfig

@@ -249,7 +249,8 @@ config MTD_NAND_DOCG4
 
 config MTD_NAND_SHARPSL
 	tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
-	depends on ARCH_PXA
+	depends on ARCH_PXA || COMPILE_TEST
+	depends on HAS_IOMEM
 
 config MTD_NAND_CAFE
 	tristate "NAND support for OLPC CAFÉ chip"