Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/m68k/platform/coldfire/intc.c b/arch/m68k/platform/coldfire/intc.c
index c28a6ed..0bbb414 100644
--- a/arch/m68k/platform/coldfire/intc.c
+++ b/arch/m68k/platform/coldfire/intc.c
@@ -37,7 +37,7 @@
 /*
  * In the early version 2 core ColdFire parts the IMR register was 16 bits
  * in size. Version 3 (and later version 2) core parts have a 32 bit
- * sized IMR register. Provide some size independant methods to access the
+ * sized IMR register. Provide some size independent methods to access the
  * IMR register.
  */
 #ifdef MCFSIM_IMR_IS_16BITS