NFC: Remove obsolete setting of DEBUG

CONFIG_DYNAMIC_DEBUG is the right toggle to enable pr_debug().
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/Makefile

@@ -14,5 +14,3 @@ obj-$(CONFIG_NFC_TRF7970A)	+= trf7970a.o
 obj-$(CONFIG_NFC_ST21NFCA)  	+= st21nfca/
 obj-$(CONFIG_NFC_ST21NFCB)	+= st21nfcb/
 obj-$(CONFIG_NFC_NXP_NCI)	+= nxp-nci/
-
-ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG

drivers/nfc/nxp-nci/Makefile

@@ -7,5 +7,3 @@ nxp-nci_i2c-objs = i2c.o
 
 obj-$(CONFIG_NFC_NXP_NCI) += nxp-nci.o
 obj-$(CONFIG_NFC_NXP_NCI_I2C) += nxp-nci_i2c.o
-
-ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG