mfd: rtsx: Fix checkpatch warning

WARNING: Avoid CamelCase: <min_N>
+	u8 N, min_N, max_N, clk_divider;

WARNING: Avoid CamelCase: <max_N>
+	u8 N, min_N, max_N, clk_divider;
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/rtsx_pcr.c

@@ -590,7 +590,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
 		u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk)
 {
 	int err, clk;
-	u8 N, min_N, max_N, clk_divider;
+	u8 n, min_n, max_n, clk_divider;
 	u8 mcu_cnt, div, max_div;
 	u8 depth[] = {
 		[RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M,
@@ -615,8 +615,8 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
 	card_clock /= 1000000;
 	dev_dbg(&(pcr->pci->dev), "Switch card clock to %dMHz\n", card_clock);
 
-	min_N = 80;
-	max_N = 208;
+	min_n = 80;
+	max_n = 208;
 	max_div = CLK_DIV_8;
 
 	clk = card_clock;
@@ -630,30 +630,30 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
 		return 0;
 
 	if (pcr->ops->conv_clk_and_div_n)
-		N = (u8)pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N);
+		n = (u8)pcr->ops->conv_clk_and_div_n(clk, CLK_TO_DIV_N);
 	else
-		N = (u8)(clk - 2);
-	if ((clk <= 2) || (N > max_N))
+		n = (u8)(clk - 2);
+	if ((clk <= 2) || (n > max_n))
 		return -EINVAL;
 
 	mcu_cnt = (u8)(125/clk + 3);
 	if (mcu_cnt > 15)
 		mcu_cnt = 15;
 
-	/* Make sure that the SSC clock div_n is equal or greater than min_N */
+	/* Make sure that the SSC clock div_n is equal or greater than min_n */
 	div = CLK_DIV_1;
-	while ((N < min_N) && (div < max_div)) {
+	while ((n < min_n) && (div < max_div)) {
 		if (pcr->ops->conv_clk_and_div_n) {
-			int dbl_clk = pcr->ops->conv_clk_and_div_n(N,
+			int dbl_clk = pcr->ops->conv_clk_and_div_n(n,
 					DIV_N_TO_CLK) * 2;
-			N = (u8)pcr->ops->conv_clk_and_div_n(dbl_clk,
+			n = (u8)pcr->ops->conv_clk_and_div_n(dbl_clk,
 					CLK_TO_DIV_N);
 		} else {
-			N = (N + 2) * 2 - 2;
+			n = (n + 2) * 2 - 2;
 		}
 		div++;
 	}
-	dev_dbg(&(pcr->pci->dev), "N = %d, div = %d\n", N, div);
+	dev_dbg(&(pcr->pci->dev), "n = %d, div = %d\n", n, div);
 
 	ssc_depth = depth[ssc_depth];
 	if (double_clk)
@@ -670,7 +670,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL2,
 			SSC_DEPTH_MASK, ssc_depth);
-	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, N);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
 	if (vpclk) {
 		rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL,