drivers: use lowercase hex prefix style

Use consistent lowercase hex prefix style in drivers/*

Does not change hex prefix case in allcaps uppercase style error messages

Signed-off-by: E Shattow <e@freeshell.de>
diff --git a/drivers/mmc/sdhci-cadence6.c b/drivers/mmc/sdhci-cadence6.c
index a5ed873..9a92b84 100644
--- a/drivers/mmc/sdhci-cadence6.c
+++ b/drivers/mmc/sdhci-cadence6.c
@@ -19,7 +19,7 @@
 #include "sdhci-cadence.h"
 
 /* IO Delay Information */
-#define SDHCI_CDNS_HRS07		0X1C
+#define SDHCI_CDNS_HRS07		0x1C
 #define   SDHCI_CDNS_HRS07_RW_COMPENSATE	GENMASK(20, 16)
 #define   SDHCI_CDNS_HRS07_IDELAY_VAL		GENMASK(4, 0)
 
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index 0e2bdab..2375b15 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -83,7 +83,7 @@
 
 #define VERSAL_NET_EMMC_ICLK_PHASE_DDR52_DLY_CHAIN	39
 #define VERSAL_NET_EMMC_ICLK_PHASE_DDR52_DLL		146
-#define VERSAL_NET_PHY_CTRL_STRB90_STRB180_VAL		0X77
+#define VERSAL_NET_PHY_CTRL_STRB90_STRB180_VAL		0x77
 
 struct arasan_sdhci_clk_data {
 	int clk_phase_in[MMC_TIMING_MMC_HS400 + 1];