MIPS: AR7: Remove unused prom_getchar()

Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/811/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/ar7/prom.c

@@ -272,13 +272,6 @@ static inline void serial_out(int offset, int value)
 	writel(value, (void *)PORT(offset));
 }
 
-char prom_getchar(void)
-{
-	while (!(serial_in(UART_LSR) & UART_LSR_DR))
-		;
-	return serial_in(UART_RX);
-}
-
 int prom_putchar(char c)
 {
 	while ((serial_in(UART_LSR) & UART_LSR_TEMT) == 0)