ARM: tegra: Fix typo (reset -> rest) in comment

Easy typo to make when you're working in this area of the code.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/mach-tegra/sleep-tegra30.S

@@ -223,7 +223,7 @@ wfe_war:
 	b	__cpu_reset_again
 
 	/*
-	 * 38 nop's, which fills reset of wfe cache line and
+	 * 38 nop's, which fills rest of wfe cache line and
 	 * 4 more cachelines with nop
 	 */
 	.rept 38