cpu/qemu-x86: Fix CPU driver

There's a typo in the cpu driver causing it to always use the weak
implementation defined in the devicetree instead of the real
implementation.

Tested on qemu-q35, the CPU driver contains valid values.

Change-Id: I4a6bb447bfdb3df6053c0df8be9d7c6aa8f689be
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/29675
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/cpu/qemu-x86/qemu.c

@@ -35,6 +35,6 @@ static const struct cpu_driver driver __cpu_driver = {
 	.id_table = cpu_table,
 };
 
-struct chip_operations cpu_x86_qemu_ops = {
+struct chip_operations cpu_qemu_x86_ops = {
 	CHIP_NAME("QEMU x86 CPU")
 };