fix(nxp-crypto): refine code to avoid hang issue for some of toolchain

bitfield structure maybe has strict-aliasing issue for some compiler,
for example the old code has hang issue for yocto 3.4 toolchain, so
refine the code to avoid to use bitfield structure.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: I6b6d7597311240dd6d6b8ca4ce508c69332f9c68
diff --git a/drivers/nxp/crypto/caam/src/jobdesc.c b/drivers/nxp/crypto/caam/src/jobdesc.c
index 9c235af..f559c4b 100644
--- a/drivers/nxp/crypto/caam/src/jobdesc.c
+++ b/drivers/nxp/crypto/caam/src/jobdesc.c
@@ -60,8 +60,8 @@
 #ifdef CONFIG_PHYS_64BIT
 	ptr_addr_t *ptr_addr = (ptr_addr_t *) last;
 
-	ptr_addr->m_halves.high = PHYS_ADDR_HI(ptr);
-	ptr_addr->m_halves.low = PHYS_ADDR_LO(ptr);
+	ptr_addr->high = PHYS_ADDR_HI(ptr);
+	ptr_addr->low = PHYS_ADDR_LO(ptr);
 #else
 	*last = ptr;
 #endif