[dev][bus][pci] move the pci driver out of platform/pc into generic space

No functional change.

app/pcitests/pci_tests.c

@@ -13,7 +13,7 @@
 #include <stdlib.h>
 #include <lk/compiler.h>
 #include <platform.h>
-#include <dev/pci.h>
+#include <dev/bus/pci.h>
 #include <lk/console_cmd.h>
 
 /*

app/pcitests/rules.mk

@@ -5,4 +5,6 @@ MODULE := $(LOCAL_DIR)
 MODULE_SRCS += \
 	$(LOCAL_DIR)/pci_tests.c
 
+MODULE_DEPS += dev/bus/pci
+
 include make/module.mk

dev/bus/pci/pci.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2009 Corey Tabaka
+ * Copyright (c) 2020 Travis Geiselbrecht
  *
  * Use of this source code is governed by a MIT-style
  * license that can be found in the LICENSE file or at
@@ -12,7 +13,7 @@
 #include <kernel/thread.h>
 #include <kernel/spinlock.h>
 #include <arch/x86/descriptor.h>
-#include <dev/pci.h>
+#include <dev/bus/pci.h>
 #include <lk/trace.h>
 
 #define LOCAL_TRACE 0

platform/pc/ide.c

@@ -18,7 +18,7 @@
 #include <platform/ide.h>
 #include <platform/pc.h>
 #include <platform.h>
-#include <dev/pci.h>
+#include <dev/bus/pci.h>
 #include <dev/driver.h>
 #include <dev/class/block.h>
 #include <kernel/event.h>

platform/pc/platform.c

@@ -17,7 +17,7 @@
 #include <platform/multiboot.h>
 #include <platform/console.h>
 #include <platform/keyboard.h>
-#include <dev/pci.h>
+#include <dev/bus/pci.h>
 #include <dev/uart.h>
 #include <arch/x86.h>
 #include <arch/mmu.h>

platform/pc/rules.mk

@@ -7,6 +7,7 @@ MODULE := $(LOCAL_DIR)
 CPU ?= generic
 
 MODULE_DEPS += \
+    dev/bus/pci \
     lib/bio \
     lib/cbuf
 
@@ -17,7 +18,6 @@ MODULE_SRCS += \
     $(LOCAL_DIR)/debug.c \
     $(LOCAL_DIR)/console.c \
     $(LOCAL_DIR)/keyboard.c \
-    $(LOCAL_DIR)/pci.c \
     $(LOCAL_DIR)/ide.c \
     $(LOCAL_DIR)/uart.c \