x86: rename 'genapic' to 'apic'

Rename genapic-> to apic-> references because in a future chagne we'll
open-code all the indirect calls (instead of obscuring them via macros),
so we want this reference to be as short as possible.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/include/asm/mach-default/mach_ipi.h b/arch/x86/include/asm/mach-default/mach_ipi.h
index 191312d..0893996 100644
--- a/arch/x86/include/asm/mach-default/mach_ipi.h
+++ b/arch/x86/include/asm/mach-default/mach_ipi.h
@@ -12,8 +12,8 @@
 
 #ifdef CONFIG_X86_64
 #include <asm/genapic.h>
-#define send_IPI_mask (genapic->send_IPI_mask)
-#define send_IPI_mask_allbutself (genapic->send_IPI_mask_allbutself)
+#define send_IPI_mask (apic->send_IPI_mask)
+#define send_IPI_mask_allbutself (apic->send_IPI_mask_allbutself)
 #else
 static inline void send_IPI_mask(const struct cpumask *mask, int vector)
 {
@@ -39,8 +39,8 @@
 }
 
 #ifdef CONFIG_X86_64
-#define send_IPI_allbutself (genapic->send_IPI_allbutself)
-#define send_IPI_all (genapic->send_IPI_all)
+#define send_IPI_allbutself (apic->send_IPI_allbutself)
+#define send_IPI_all (apic->send_IPI_all)
 #else
 static inline void send_IPI_allbutself(int vector)
 {