Shakti-platform-UART-Update

[Prasanna T]

Please find the attached revised patch, with respect to the latest changes made. Have dealt other amendments through dts. A primary change that was made as part of this patch is follows.The age old version of UART was upgraded long back, but that was missed out in the code which we did updated now (The old version of UART is not supported anymore, hence removed the inline comment which is also outdated now), The current version is the only UART supported right now by Shakti
---

diff --git a/lib/utils/serial/shakti-uart.c b/lib/utils/serial/shakti-uart.c
index 5f2fe75..122218b 100644
--- a/lib/utils/serial/shakti-uart.c
+++ b/lib/utils/serial/shakti-uart.c
@@ -19,21 +19,22 @@
 #define REG_RX_THRES	0x20
 
 #define UART_TX_FULL  0x2
+#define UART_RX_NOT_EMPTY 0x4
 #define UART_RX_FULL  0x8
 
 static volatile char *uart_base;
 
 static void shakti_uart_putc(char ch)
 {
-	while((readw(uart_base + REG_STATUS) & UART_TX_FULL))
+	while((readb(uart_base + REG_STATUS) & UART_TX_FULL))
 		;
 	writeb(ch, uart_base + REG_TX);
 }
 
 static int shakti_uart_getc(void)
 {
-	u16 status = readw(uart_base + REG_STATUS);
-	if (status & UART_RX_FULL)
+	u16 status = readb(uart_base + REG_STATUS);
+	if (status & UART_RX_NOT_EMPTY)
 		return readb(uart_base + REG_RX);
 	return -1;
 }