powerpc: move get_pvr() and get_svr() into C

Avoid unnecessary assembly functions when they can easily be written
in C.
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>

arch/powerpc/cpu/mpc83xx/start.S

@@ -116,16 +116,6 @@ disable_addr_trans:
 	mtspr	SRR1, r3
 	rfi
 
-	.globl get_svr
-get_svr:
-	mfspr	r3, SVR
-	blr
-
-	.globl get_pvr
-get_pvr:
-	mfspr	r3, PVR
-	blr
-
 	.globl	ppcDWstore
 ppcDWstore:
 	lfd	1, 0(r4)

arch/powerpc/cpu/mpc85xx/start.S

@@ -1427,16 +1427,6 @@ dcache_status:
 	andi.	r3,r3,L1CSR0_DCE
 	blr
 
-	.globl get_pvr
-get_pvr:
-	mfspr	r3,PVR
-	blr
-
-	.globl get_svr
-get_svr:
-	mfspr	r3,SVR
-	blr
-
 /*------------------------------------------------------------------------------- */
 /* Function:	 in8 */
 /* Description:	 Input 8 bits */

arch/powerpc/cpu/mpc86xx/start.S

@@ -545,16 +545,6 @@ int_return:
 dc_read:
 	blr
 
-	.globl get_pvr
-get_pvr:
-	mfspr	r3, PVR
-	blr
-
-	.globl get_svr
-get_svr:
-	mfspr	r3, SVR
-	blr
-
 
 /*
  * Function:	in8

arch/powerpc/cpu/mpc8xx/start.S

@@ -305,11 +305,6 @@ int_return:
 	SYNC
 	rfi
 
-	.globl get_pvr
-get_pvr:
-	mfspr	r3, PVR
-	blr
-
 /*------------------------------------------------------------------------------*/
 
 /*

arch/powerpc/include/asm/ppc.h

@@ -48,8 +48,15 @@ static inline uint get_immr(uint mask)
 	return mask ? (immr & mask) : immr;
 }
 #endif
-uint get_pvr(void);
-uint get_svr(void);
+static inline uint get_pvr(void)
+{
+	return mfspr(PVR);
+}
+
+static inline uint get_svr(void)
+{
+	return mfspr(SVR);
+}
 
 #if defined(CONFIG_MPC85xx)	|| \
 	defined(CONFIG_MPC86xx)	|| \