MIPS: IP22/IP28: Fix typo

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Cc: adam.buchbinder@gmail.com
Cc: trivial@kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13328/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/sgi/hpc3.h

@@ -39,7 +39,7 @@ struct hpc3_pbus_dmacregs {
 	volatile u32 pbdma_dptr;	/* pbus dma channel desc ptr */
 	u32 _unused0[0x1000/4 - 2];	/* padding */
 	volatile u32 pbdma_ctrl;	/* pbus dma channel control register has
-					 * copletely different meaning for read
+					 * completely different meaning for read
 					 * compared with write */
 	/* read */
 #define HPC3_PDMACTRL_INT	0x00000001 /* interrupt (cleared after read) */