um: Select HAS_IOREMAP for UML_IOMEM_EMULATION

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time. UML supports these via its UML_IOMEM_EMULATION so let that
select HAS_IOPORT and also reflect this in NO_IOPORT_MAP.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://patch.msgid.link/20240403124300.65379-2-schnelle@linux.ibm.comSigned-off-by: Johannes Berg <johannes.berg@intel.com>

arch/um/Kconfig

@@ -48,12 +48,13 @@ config NO_IOMEM
 config UML_IOMEM_EMULATION
 	bool
 	select INDIRECT_IOMEM
+	select HAS_IOPORT
 	select GENERIC_PCI_IOMAP
 	select GENERIC_IOMAP
 	select NO_GENERIC_PCI_IOPORT_MAP
 
 config NO_IOPORT_MAP
-	def_bool y
+	def_bool !UML_IOMEM_EMULATION
 
 config ISA
 	bool