powerpc: mpc8xx: remove get_immr() argument

get_immr() is always called with 0 as an argument, so it is useless.
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>

arch/powerpc/cpu/mpc8xx/cpu.c

@@ -90,7 +90,7 @@ static int check_CPU(long clock, uint pvr, uint immr)
 int checkcpu(void)
 {
 	ulong clock = gd->cpu_clk;
-	uint immr = get_immr(0);	/* Return full IMMR contents */
+	uint immr = get_immr();	/* Return full IMMR contents */
 	uint pvr = get_pvr();
 
 	puts("CPU:   ");

arch/powerpc/cpu/mpc8xx/reginfo.c

@@ -22,7 +22,7 @@ void print_reginfo(void)
 	 */
 
 	printf("\nSystem Configuration registers\n"
-		"\tIMMR\t0x%08X\n", get_immr(0));
+		"\tIMMR\t0x%08X\n", get_immr());
 
 	printf("\tSIUMCR\t0x%08X", in_be32(&sysconf->sc_siumcr));
 	printf("\tSYPCR\t0x%08X\n", in_be32(&sysconf->sc_sypcr));

arch/powerpc/include/asm/ppc.h

@@ -40,11 +40,9 @@
 
 #include <asm/processor.h>
 
-static inline uint get_immr(uint mask)
+static inline uint get_immr(void)
 {
-	uint immr = mfspr(SPRN_IMMR);
-
-	return mask ? (immr & mask) : immr;
+	return mfspr(SPRN_IMMR);
 }
 
 static inline uint get_pvr(void)