da830_evm_emif25_pins[] is used only when CONFIG_DA830_UI_NAND
is enabled. It gives the following warning when the config is
switched off. Fix it.
arch/arm/mach-davinci/board-da830-evm.c:245:20: warning: ‘da830_evm_emif25_pins’ defined but not used [-Wunused-const-variable=]
static const short da830_evm_emif25_pins[] = {
^~~~~~~~~~~~~~~~~~~~~