refactor(st): move some storage definitions to common part

Those storage macros are common to all STM32MPU chips, move them to
plat/st/common/include/stm32mp_io_storage.h

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: Id20ec00ba65edf9ec7a3a89adfda307c954c3cb6
diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index ee07926..c5e1b96 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -195,6 +195,7 @@
 					 SRAM1_SIZE - \
 					 PLATFORM_MTD_MAX_PAGE_SIZE)
 #endif
+
 /*******************************************************************************
  * STM32MP1 device/io map related constants (used for MMU)
  ******************************************************************************/
@@ -534,9 +535,6 @@
 /* UID OTP */
 #define UID_WORD_NB			U(3)
 
-/* FWU configuration (max supported value is 15) */
-#define FWU_MAX_TRIAL_REBOOT		U(3)
-
 /*******************************************************************************
  * STM32MP1 TAMP
  ******************************************************************************/