Merge pull request ARMmbed#12863 from jeromecoutant/PR_12690_5_15

STM32 GCC Unspecified RTOS error

Author: 0xc0170

targets/TARGET_STM/TARGET_STM32L5/TARGET_STM32L552xx/TOOLCHAIN_GCC_ARM/stm32l552xx.ld

@@ -111,10 +111,7 @@ SECTIONS
     } > FLASH
     __exidx_end = .;
 
-    /* Location counter can end up 2byte aligned with narrow Thumb code but
-       __etext is assumed by startup code to be the LMA of a section in RAM
-       which must be 8-byte aligned */
-    __etext = ALIGN (8);
+    __etext = .;
     _sidata = .;
 
     .data : AT (__etext)

targets/TARGET_STM/TARGET_STM32L5/TARGET_STM32L562xx/TOOLCHAIN_GCC_ARM/stm32l562xx.ld

@@ -111,10 +111,7 @@ SECTIONS
     } > FLASH
     __exidx_end = .;
 
-    /* Location counter can end up 2byte aligned with narrow Thumb code but
-       __etext is assumed by startup code to be the LMA of a section in RAM
-       which must be 8-byte aligned */
-    __etext = ALIGN (8);
+    __etext = .;
     _sidata = .;
 
     .data : AT (__etext)