2crypto: Force correct section flags for .rodata arrays

This is a follow-up fix to CL:2157900. That CL put the problematic
arrays into sections with the right name, but they still didn't set the
right ELF flags for them (specifically the READONLY flag). This made the
assembler unhappy in coreboot, although it still seems to have built
things correctly in the end:

	{standard input}: Assembler messages:
	{standard input}:359: Warning: setting incorrect section
		attributes for .rodata.vb2_hash_names
	{standard input}:369: Warning: setting incorrect section
		attributes for .rodata.vb2_sig_names

This patch throws more ugly hacks at the problem to make it disappear.

TEST=Build coreboot for both Arm and x86 boards, confirmed that error
messages are gone and objdump shows intended section flags.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Iea93788a13e9fd14d6b5a16626294d5a4b0e5411
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2169480
Reviewed-by: Joel Kitching <kitching@chromium.org>
1 file changed