Input: lpc32xx-keys - remove an unused field in struct lpc32xx_kscan_drv

In "struct lpc32xx_kscan_drv", the 'irq' field is unused.
Remove it.

Found with cppcheck, unusedStructMember.

While at it, move the 'row_shift' field in order to fill a hole in the
structure (at least on 64 bits arch).

Signed-off-by: Christophe JAILLET <[e-mail]>
Link: https://lore.kernel.org/r/e006dfb77e[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/keyboard/lpc32xx-keys.c

···
 	struct input_dev *input;
 	struct clk *clk;
 	void __iomem *kscan_base;
-	unsigned int irq;
 
 	u32 matrix_sz;		/* Size of matrix in XxY, ie. 3 = 3x3 */
 	u32 deb_clks;		/* Debounce clocks (based on 32KHz clock) */
 	u32 scan_delay;		/* Scan delay (based on 32KHz clock) */
 
-	unsigned short *keymap;	/* Pointer to key map for the scan matrix */
 	unsigned int row_shift;
+	unsigned short *keymap;	/* Pointer to key map for the scan matrix */
 
 	u8 lastkeystates[8];
 };