mx28: Fix typo in POWER_DCLIMITS_NEGLIMIT_OFFSET

The POWER_DCLIMITS_NEGLIMIT_OFFSET bit in mx28 power supply block is
not called POWER_DCLIMITS_NETLIMIT_OFFSET, but POWER_DCLIMITS_NEGLIMIT_OFFSET.
Correct the name in the header file.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

arch/arm/include/asm/arch-mxs/regs-power.h

@@ -268,7 +268,7 @@ struct mxs_power_regs {
 #define	POWER_DCLIMITS_POSLIMIT_BUCK_MASK		(0x7f << 8)
 #define	POWER_DCLIMITS_POSLIMIT_BUCK_OFFSET		8
 #define	POWER_DCLIMITS_NEGLIMIT_MASK			0x7f
-#define	POWER_DCLIMITS_NETLIMIT_OFFSET			0
+#define	POWER_DCLIMITS_NEGLIMIT_OFFSET			0
 
 #define	POWER_LOOPCTRL_TOGGLE_DIF			(1 << 20)
 #define	POWER_LOOPCTRL_HYST_SIGN			(1 << 19)