slimbus: qcom: add HAS_IOMEM dependency

Below build failure was reported on UML,
ERROR: "devm_ioremap_resource" [drivers/slimbus/slim-qcom-ctrl.ko] undefined!
ERROR: "__ioread32_copy" [drivers/slimbus/slim-qcom-ctrl.ko] undefined!
ERROR: "__iowrite32_copy" [drivers/slimbus/slim-qcom-ctrl.ko] undefined!
ERROR: "devm_ioremap" [drivers/slimbus/slim-qcom-ctrl.ko] undefined!

This patch fixes it by making qcom slimbus depend on HAS_IOMEM, as
these are only defined when HAS_IOMEM is selected.

Reported-by: Thomas Meyer <[e-mail]>
Signed-off-by: Srinivas Kandagatla <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/slimbus/Kconfig

···
 config SLIM_QCOM_CTRL
 	tristate "Qualcomm SLIMbus Manager Component"
 	depends on SLIMBUS
+	depends on HAS_IOMEM
 	help
 	  Select driver if Qualcomm's SLIMbus Manager Component is
 	  programmed using Linux kernel.