arch/x86: Combine bootblock linker scripts

Packing bootblock sections is somewhat easier to understand
when these all appear in one .ld file.

Change-Id: Ie8629a89fa47a28db63ecc33c631b29ac5a77448
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47597
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/cpu/intel/fit/fit.ld

@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-SECTIONS {
-	. = 0xffffffc0;
-	.fit_pointer (.): {
-		KEEP(*(.fit_pointer))
-	}
-}