staging: media: lirc: remove extra parentheses around right bit shift operation

Removes extra parentheses around bitwise right shift operation.
The case handled here is when the resultant value is assigned to
a variable. The issue was detected and resolved using the following
coccinelle script:

@@
expression e, e1;
constant c;
@@

e =
-(e1
+e1
>>
-c);
+c;

@@
identifier i;
constant c;
type t;
expression e;
@@

t i =
-(e
+e
>>
-c);
+c;

@@
expression e, e1;
identifier f;
constant c;
@@

e1 = f(...,
-(e
+e
>>
-c)
+c
,...);

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/lirc/lirc_serial.c

@@ -344,7 +344,7 @@ static int init_timing_params(unsigned int new_duty_cycle,
 	/* How many clocks in a microsecond?, avoiding long long divide */
 	work = loops_per_sec;
 	work *= 4295;  /* 4295 = 2^32 / 1e6 */
-	conv_us_to_clocks = (work >> 32);
+	conv_us_to_clocks = work >> 32;
 
 	/*
 	 * Carrier period in clocks, approach good up to 32GHz clock,