Remove unnecessary ENV_RAMSTAGE guard

TEST=Able to build coreboot for CML.

Change-Id: Ic0f473e04ffc1de50dee871af52eacf0b328b376
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32764
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/drivers/uart/uart8250io.c

@@ -124,7 +124,6 @@ void uart_tx_flush(int idx)
 	uart8250_tx_flush(uart_platform_base(idx));
 }
 
-#if ENV_RAMSTAGE
 void uart_fill_lb(void *data)
 {
 	struct lb_serial serial;
@@ -138,4 +137,3 @@ void uart_fill_lb(void *data)
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250, data);
 }
-#endif

src/drivers/uart/uart8250mem.c

@@ -147,7 +147,6 @@ void uart_tx_flush(int idx)
 	uart8250_mem_tx_flush(base);
 }
 
-#if ENV_RAMSTAGE
 void uart_fill_lb(void *data)
 {
 	struct lb_serial serial;
@@ -166,4 +165,3 @@ void uart_fill_lb(void *data)
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
 }
-#endif