modules: update west.yml for hal_atmel

Sam4l use different TC_CMR_WAVEFORM_EEVT macro name.
Update these macro names to be consistent with other sam mcu.

Signed-off-by: CHEN Xing <[email protected]>

Author: MCHP-MPU-Solutions-SHA

west.yml

@@ -159,7 +159,7 @@ manifest:
       groups:
         - hal
     - name: hal_atmel
-      revision: ca7e4c6920f44b9d677ed5995ffa169f18a54cdf
+      revision: pull/49/head
       path: modules/hal/atmel
       groups:
         - hal