optee: Remove duplicate 'of' in two places.

file: ./drivers/tee/optee/optee_smc.h
line: 192
 * a2   Size of of SHM
chanegd to
 * a2   Size of SHM

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

Author: Jiang Jian

drivers/tee/optee/optee_smc.h

@@ -189,7 +189,7 @@ struct optee_smc_call_get_os_revision_result {
  * Have config return register usage:
  * a0	OPTEE_SMC_RETURN_OK
  * a1	Physical address of start of SHM
- * a2	Size of of SHM
+ * a2	Size of SHM
  * a3	Cache settings of memory, as defined by the
  *	OPTEE_SMC_SHM_* values above
  * a4-7	Preserved