x86: ioapic: Remove useless inlines

There is no point to have irq_trigger() and irq_polarity() as wrappers
around the MPBIOS_* camel case functions. Get rid of both the inlines
and the ugly camel case.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 7344b42..2d49e4b 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -821,7 +821,7 @@
 #define default_MCA_trigger(idx)	(1)
 #define default_MCA_polarity(idx)	default_ISA_polarity(idx)
 
-static int MPBIOS_polarity(int idx)
+static int irq_polarity(int idx)
 {
 	int bus = mp_irqs[idx].srcbus;
 	int polarity;
@@ -863,7 +863,7 @@
 	return polarity;
 }
 
-static int MPBIOS_trigger(int idx)
+static int irq_trigger(int idx)
 {
 	int bus = mp_irqs[idx].srcbus;
 	int trigger;
@@ -935,16 +935,6 @@
 	return trigger;
 }
 
-static inline int irq_polarity(int idx)
-{
-	return MPBIOS_polarity(idx);
-}
-
-static inline int irq_trigger(int idx)
-{
-	return MPBIOS_trigger(idx);
-}
-
 static int pin_2_irq(int idx, int apic, int pin)
 {
 	int irq;