cmd: qfw: rename qemu_fw_cfg.[c|h] to qfw.[c|h]

Make file names consistent with CONFIG_QFW and CONFIG_CMD_QFW

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c
index c44a286..8207274 100644
--- a/arch/x86/cpu/mp_init.c
+++ b/arch/x86/cpu/mp_init.c
@@ -11,7 +11,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <malloc.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
 #include <asm/atomic.h>
 #include <asm/cpu.h>
 #include <asm/interrupt.h>
diff --git a/arch/x86/cpu/qemu/acpi_table.c b/arch/x86/cpu/qemu/acpi_table.c
index b17fa03..5bb1756 100644
--- a/arch/x86/cpu/qemu/acpi_table.c
+++ b/arch/x86/cpu/qemu/acpi_table.c
@@ -8,7 +8,7 @@
 #include <command.h>
 #include <errno.h>
 #include <malloc.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
 #include <asm/io.h>
 #include <asm/tables.h>
 #include <asm/e820.h>
diff --git a/arch/x86/cpu/qemu/cpu.c b/arch/x86/cpu/qemu/cpu.c
index 4d2989a..b1a965e 100644
--- a/arch/x86/cpu/qemu/cpu.c
+++ b/arch/x86/cpu/qemu/cpu.c
@@ -8,7 +8,7 @@
 #include <cpu.h>
 #include <dm.h>
 #include <errno.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
 #include <asm/cpu.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c
index c29add3..680e558 100644
--- a/arch/x86/cpu/qemu/qemu.c
+++ b/arch/x86/cpu/qemu/qemu.c
@@ -6,7 +6,7 @@
 
 #include <common.h>
 #include <pci.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
 #include <asm/irq.h>
 #include <asm/post.h>
 #include <asm/processor.h>