Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/powerpc/include/asm/vdso_datapage.h b/arch/powerpc/include/asm/vdso_datapage.h
index 25e3922..b73a819 100644
--- a/arch/powerpc/include/asm/vdso_datapage.h
+++ b/arch/powerpc/include/asm/vdso_datapage.h
@@ -57,7 +57,7 @@
 	} version;
 
 	/* Note about the platform flags: it now only contains the lpar
-	 * bit. The actual platform number is dead and burried
+	 * bit. The actual platform number is dead and buried
 	 */
 	__u32 platform;			/* Platform flags		0x18 */
 	__u32 processor;		/* Processor type		0x1C */