staging: bcm2835-audio: use | instead of || otherwise result is just boolean 1

The incorrect or operator is being used resulting in cookies being
set to 1 (true) rather than the intended hex value.  Fix this by
using | instead of ||.

Issue found with static analysis with cppcheck

Fixes: 0cec463e ("staging: bcm2835-audio: Simplify callback structure for write data")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/bcm2835-audio/bcm2835-vchiq.c

@@ -91,9 +91,9 @@ bcm2835_vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle,
 					 size);
 }
 
-static const u32 BCM2835_AUDIO_WRITE_COOKIE1 = ('B' << 24 | 'C' << 16 ||
+static const u32 BCM2835_AUDIO_WRITE_COOKIE1 = ('B' << 24 | 'C' << 16 |
 						'M' << 8  | 'A');
-static const u32 BCM2835_AUDIO_WRITE_COOKIE2 = ('D' << 24 | 'A' << 16 ||
+static const u32 BCM2835_AUDIO_WRITE_COOKIE2 = ('D' << 24 | 'A' << 16 |
 						'T' << 8  | 'A');
 
 struct bcm2835_audio_work {