Fix misspellings of "whether" in comments.

"Whether" is misspelled in various comments across the tree; this
fixes them. No code changes.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/powerpc/include/asm/pte-hash64-64k.h b/arch/powerpc/include/asm/pte-hash64-64k.h
index eedf427..3e13e23 100644
--- a/arch/powerpc/include/asm/pte-hash64-64k.h
+++ b/arch/powerpc/include/asm/pte-hash64-64k.h
@@ -23,7 +23,7 @@
 
 /* Note the full page bits must be in the same location as for normal
  * 4k pages as the same assembly will be used to insert 64K pages
- * wether the kernel has CONFIG_PPC_64K_PAGES or not
+ * whether the kernel has CONFIG_PPC_64K_PAGES or not
  */
 #define _PAGE_F_SECOND  0x00008000 /* full page: hidx bits */
 #define _PAGE_F_GIX     0x00007000 /* full page: hidx bits */
diff --git a/arch/powerpc/include/asm/smu.h b/arch/powerpc/include/asm/smu.h
index ae20ce1..6e909f3 100644
--- a/arch/powerpc/include/asm/smu.h
+++ b/arch/powerpc/include/asm/smu.h
@@ -132,7 +132,7 @@
   *
   * At this point, the OF driver seems to have a limitation on transfer
   * sizes of 0xd bytes on reads and 0x5 bytes on writes. I do not know
-  * wether this is just an OF limit due to some temporary buffer size
+  * whether this is just an OF limit due to some temporary buffer size
   * or if this is an SMU imposed limit. This driver has the same limitation
   * for now as I use a 0x10 bytes temporary buffer as well
   *
@@ -236,7 +236,7 @@
  *   3 (optional): enable nmi? [0x00 or 0x01]
  *
  * Returns:
- *   If parameter 2 is 0x00 and parameter 3 is not specified, returns wether
+ *   If parameter 2 is 0x00 and parameter 3 is not specified, returns whether
  *   NMI is enabled. Otherwise unknown.
  */
 #define   SMU_CMD_MISC_df_NMI_OPTION		0x04