CBMEM ACPI: Move resume handler

Handler is ACPI/x86 specific so move details out of cbmem code.

With static CBMEM initialisation, ramstage will need to test for
S3 wakeup condition so publish also acpi_is_wakeup().

Change-Id: If591535448cdd24a54262b534c1a828fc13da759
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/4619
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/include/cbmem.h

@@ -166,8 +166,10 @@ void cbmem_add_lb_mem(struct lb_memory *mem);
 void cbmem_list(void);
 void cbmem_arch_init(void);
 void cbmem_print_entry(int n, u32 id, u64 start, u64 size);
+void cbmem_fail_resume(void);
 #else
 static inline void cbmem_arch_init(void) {}
+static inline void cbmem_fail_resume(void) {}
 #endif /* __PRE_RAM__ */
 
 #endif /* __ASSEMBLER__ */