Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 8b139bf..0707fae 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -662,7 +662,7 @@
 	 * some memory vectors. When SPARSEMEM is in use, it doesn't
 	 * verify that the size is big enough for the final
 	 * vectors. Making the smallest chuck 4MB seems to be enough
-	 * to consistantly work.
+	 * to consistently work.
 	 */
 	mem_alloc_size = 4 << 20;
 	if (mem_alloc_size > MAX_MEMORY)