hw/arm/omap.h: correct typos

Correct typos automatically found with the `typos` tool
<https://crates.io/crates/typos>

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
(mjt: fix comment style as suggested by Philippe)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

include/hw/arm/omap.h

@@ -1008,7 +1008,8 @@ void omap_mpu_wakeup(void *opaque, int irq, int req);
                       __func__, paddr)
 
 /* OMAP-specific Linux bootloader tags for the ATAG_BOARD area
-   (Board-specifc tags are not here)  */
+ * (Board-specific tags are not here)
+ */
 #define OMAP_TAG_CLOCK		0x4f01
 #define OMAP_TAG_MMC		0x4f02
 #define OMAP_TAG_SERIAL_CONSOLE	0x4f03