bsp/stm32h7: configure S(D)RAM values for STM32H7B3I-DK BSP variant

Caveat: SDRAM 1 is completely disabled for now.

spec/build/bsps/arm/stm32h7/optmemsdram1sz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 33554432
-default-by-variant: []
+default-by-variant:
+- value: 0
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []

spec/build/bsps/arm/stm32h7/optmemsram1sz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 0x20000
-default-by-variant: []
+default-by-variant:
+- value: 0x10000
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []

spec/build/bsps/arm/stm32h7/optmemsram2sz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 0x20000
-default-by-variant: []
+default-by-variant:
+- value: 0x10000
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []

spec/build/bsps/arm/stm32h7/optmemsram3sz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 0x8000
-default-by-variant: []
+default-by-variant:
+- value: 0x0
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []

spec/build/bsps/arm/stm32h7/optmemsram4sz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 0x10000
-default-by-variant: []
+default-by-variant:
+- value: 0x8000
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []

spec/build/bsps/arm/stm32h7/optmemsramaxisz.yml

@@ -3,7 +3,10 @@ actions:
 - env-assign: null
 build-type: option
 default: 0x80000
-default-by-variant: []
+default-by-variant:
+- value: 0xA0000
+  variants:
+  - arm/stm32h7b3i-dk
 enabled-by: true
 format: '{:#010x}'
 links: []