Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c
index daf6e77..e67b566 100644
--- a/drivers/uio/uio_pruss.c
+++ b/drivers/uio/uio_pruss.c
@@ -39,7 +39,7 @@
 MODULE_PARM_DESC(extram_pool_sz, "external ram pool size to allocate");
 
 /*
- * Host event IRQ numbers from PRUSS - PRUSS can generate upto 8 interrupt
+ * Host event IRQ numbers from PRUSS - PRUSS can generate up to 8 interrupt
  * events to AINTC of ARM host processor - which can be used for IPC b/w PRUSS
  * firmware and user space application, async notification from PRU firmware
  * to user space application