sandbox: Don't use PCI in SPL

PCI is not supported in SPL for sandbox, so avoid using it.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/sandbox/cpu/cpu.c

@@ -57,7 +57,7 @@ int cleanup_before_linux_select(int flags)
 
 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
 {
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD)
 	unsigned long plen = len;
 	void *ptr;
 

arch/sandbox/lib/Makefile

@@ -8,5 +8,7 @@
 #
 
 obj-y	+= interrupts.o
+ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_PCI)	+= pci_io.o
+endif
 obj-$(CONFIG_CMD_BOOTM) += bootm.o