x86: Move acpi_table header to main include/ directory

This file is potentially useful to other architectures saddled with ACPI
so move most of its contents to a common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
diff --git a/lib/efi_loader/efi_acpi.c b/lib/efi_loader/efi_acpi.c
index a4e5e53..9ae9c25 100644
--- a/lib/efi_loader/efi_acpi.c
+++ b/lib/efi_loader/efi_acpi.c
@@ -7,7 +7,7 @@
 
 #include <common.h>
 #include <efi_loader.h>
-#include <asm/acpi_table.h>
+#include <acpi/acpi_table.h>
 
 static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;