package/wolftpm: fix typo on BR2_PACKAGE_WOLFTPM_NUVOTON

The typo was added by commit 'd0dcc62c4b package/wolftpm: Add config
options for TPM 2.0 extra capabilities'

Cc: Dimitar Tomov <dimi@tpm.dev>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/wolftpm/wolftpm.mk

@@ -41,7 +41,7 @@ else
 WOLFTPM_CONF_OPTS += --disable-st33
 endif
 
-ifeq ($(BR2_PACKAGE_WOLFTPM_NPCT750),y)
+ifeq ($(BR2_PACKAGE_WOLFTPM_NUVOTON),y)
 WOLFTPM_CONF_OPTS += --enable-nuvoton
 else
 WOLFTPM_CONF_OPTS += --disable-nuvoton