cpu,device/: Remove some __SIMPLE_DEVICE__ and __ROMCC__ use

Change-Id: I62d7450c8e83eec7bf4ad5d0709269a132fd0499
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35649
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/include/cpu/cpu.h

@@ -3,7 +3,6 @@
 
 #include <arch/cpu.h>
 
-#if !defined(__ROMCC__)
 void cpu_initialize(unsigned int cpu_index);
 /* Returns default APIC id based on logical_cpu number or < 0 on failure. */
 int cpu_get_apic_id(int logical_cpu);
@@ -14,13 +13,15 @@ void initialize_cpus(struct bus *cpu_bus);
 asmlinkage void secondary_cpu_init(unsigned int cpu_index);
 int cpu_phys_address_size(void);
 
+#if ENV_RAMSTAGE
 #define __cpu_driver __attribute__((used, __section__(".rodata.cpu_driver")))
-#ifndef __SIMPLE_DEVICE__
+#else
+#define __cpu_driver __attribute__((unused))
+#endif
+
 /** start of compile time generated pci driver array */
 extern struct cpu_driver _cpu_drivers[];
 /** end of compile time generated pci driver array */
 extern struct cpu_driver _ecpu_drivers[];
-#endif
-#endif /* !__ROMCC__ */
 
 #endif /* CPU_CPU_H */