ACPI: Remove CONFIG_GENERATE_ACPI_TABLES

As currently many systems would be barely functional without ACPI,
always generate ACPI tables if supported.

Change-Id: I372dbd03101030c904dab153552a1291f3b63518
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4609
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/arch/x86/boot/tables.c

@@ -108,7 +108,7 @@ void write_tables(void)
 	}
 #endif /* CONFIG_GENERATE_MP_TABLE */
 
-#if CONFIG_GENERATE_ACPI_TABLES
+#if CONFIG_HAVE_ACPI_TABLES
 #if CONFIG_DYNAMIC_CBMEM
 #define MAX_ACPI_SIZE (144 * 1024)
 #else