[POWERPC] Spelling fixes: arch/ppc/

Spelling fixes in arch/ppc/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/ppc/syslib/m82xx_pci.c b/arch/ppc/syslib/m82xx_pci.c
index e3b586b..fe860d5 100644
--- a/arch/ppc/syslib/m82xx_pci.c
+++ b/arch/ppc/syslib/m82xx_pci.c
@@ -197,7 +197,7 @@
 	   CPM high      	0b0000
 	   CPM middle           0b0001
 	   CPM low       	0b0010
-	   PCI reguest          0b0011
+	   PCI request          0b0011
 	   Reserved      	0b0100
 	   Reserved      	0b0101
 	   Internal Core     	0b0110