powerpc: mpc83xx: Fix soc.h

There are helpers included in soc.h

Declare them static inline so that soc.h can be
included in several places.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
diff --git a/arch/powerpc/include/asm/arch-mpc83xx/soc.h b/arch/powerpc/include/asm/arch-mpc83xx/soc.h
index 39bf7d5..ce54f9b 100644
--- a/arch/powerpc/include/asm/arch-mpc83xx/soc.h
+++ b/arch/powerpc/include/asm/arch-mpc83xx/soc.h
@@ -18,14 +18,14 @@
 	SOC_MPC8379,
 };
 
-bool mpc83xx_has_sdhc(int type)
+static inline bool mpc83xx_has_sdhc(int type)
 {
 	return (type == SOC_MPC8308) ||
 	       (type == SOC_MPC8309) ||
 	       (type == SOC_MPC8379);
 }
 
-bool mpc83xx_has_tsec(int type)
+static inline bool mpc83xx_has_tsec(int type)
 {
 	return (type == SOC_MPC8308) ||
 	       (type == SOC_MPC8313) ||
@@ -34,37 +34,37 @@
 	       (type == SOC_MPC8379);
 }
 
-bool mpc83xx_has_pcie1(int type)
+static inline bool mpc83xx_has_pcie1(int type)
 {
 	return (type == SOC_MPC8308) ||
 	       (type == SOC_MPC8315) ||
 	       (type == SOC_MPC8379);
 }
 
-bool mpc83xx_has_pcie2(int type)
+static inline bool mpc83xx_has_pcie2(int type)
 {
 	return (type == SOC_MPC8315) ||
 	       (type == SOC_MPC8379);
 }
 
-bool mpc83xx_has_sata(int type)
+static inline bool mpc83xx_has_sata(int type)
 {
 	return (type == SOC_MPC8315) ||
 	       (type == SOC_MPC8379);
 }
 
-bool mpc83xx_has_pci(int type)
+static inline bool mpc83xx_has_pci(int type)
 {
 	return type != SOC_MPC8308;
 }
 
-bool mpc83xx_has_second_i2c(int type)
+static inline bool mpc83xx_has_second_i2c(int type)
 {
 	return (type != SOC_MPC8315) &&
 	       (type != SOC_MPC832X);
 }
 
-bool mpc83xx_has_quicc_engine(int type)
+static inline bool mpc83xx_has_quicc_engine(int type)
 {
 	return (type == SOC_MPC8309) ||
 	       (type == SOC_MPC832X) ||